Influenza immunization timing
|
|
- Darlene Wells
- 6 years ago
- Views:
Transcription
1 Influenza immunization timing Technical report March 2017
2 Public Health Ontario Public Health Ontario is a Crown corporation dedicated to protecting and promoting the health of all Ontarians and reducing inequities in health. Public Health Ontario links public health practitioners, frontline health workers and researchers to the best scientific intelligence and knowledge from around the world. Public Health Ontario provides expert scientific and technical support to government, local public health units and health care providers relating to the following: communicable and infectious diseases infection prevention and control environmental and occupational health emergency preparedness health promotion, chronic disease and injury prevention public health laboratory services Public Health Ontario's work also includes surveillance, epidemiology, research, professional development and knowledge services. For more information, visit How to cite this document: Ontario Agency for Health Protection and Promotion (Public Health Ontario). Influenza immunization timing. Toronto, ON: Queen's Printer for Ontario; ISBN [PDF] ISBN [Print] Public Health Ontario acknowledges the financial support of the Ontario Government. Queen s Printer for Ontario, 2017 Technical report: Influenza immunization timing ii
3 Authors Hannah Chung Epidemiologist Institute for Clinical Evaluative Sciences Dr. Jeff Kwong Senior Scientist Institute for Clinical Evaluative Sciences and Public Health Ontario Christina Renda Health Analyst Communicable Diseases Public Health Ontario Dr. Bryna Warshawsky Public Health Physician Communicable Disease Prevention and Control Public Health Ontario Technical report: Influenza immunization timing iii
4 Acknowledgements We gratefully acknowledge the following individuals who provided very helpful and informative advice and support: Dr. Shelly Bolotin, Scientist, Applied Immunization Research, Public Health Ontario Dr. Natasha Crowcroft, Chief, Applied Immunization Research, Public Health Ontario Dr. Ian Gemmill, Medical Officer of Health, Kingston, Frontenac, Lennox & Addington Public Health Dr. Jonathan Gubbay, Medical Microbiologist, Public Health Ontario Laboratories Karin Hohenadel, Senior Program Specialist, Communicable Diseases, Public Health Ontario Emily Karas, Manager, Communicable Disease, Public Health Ontario Dr. Jeff Kwong, Public Health Ontario and Institute for Clinical Evaluative Science Dr. Allison McGeer, Director of Infection Control, Mount Sinai Hospital Stacy Recalla, Nurse Consultant, Ministry of Health and Long-Term Care Lauren Ramsay, Research Assistant, Public Health Ontario Christina Renda, Health Analyst, Public Health Ontario Dr. Beate Sander, Scientist, Public Health Ontario Dr. Doug Sider, Medical Director, Communicable Disease Prevention and Control, Public Health Ontario Dr. Rob Stirling, Senior Medical Advisor, Public Health Agency of Canada Dr. Bryna Warshawsky, Public Health Physician, Public Health Ontario - Chair Anne-Luise Winter, Epidemiologist Specialist, Public Health Ontario Dr. Barbara Yaffe, Director, Communicable Disease Control & Associate Medical Officer of Health, Toronto Public Health A special thank you to the external reviewers who dedicated their time and expertise: Dr. Rodica Gilca, Médecin-conseil, Institut national de santé publique du Québec Dr Helen K Green, Specialty Registrar in Public Health, England, formerly Influenza Epidemiologist, Public Health England Technical report: Influenza immunization timing iv
5 Dr. Judy MacDonald, Medical Officer of Health - Calgary Dr. Susan Tamblyn, former Medical Officer of Health, Perth District Health Unit The assistance of Matt Root, Public Health Ontario for his administrative support is also greatly appreciated. Disclaimer This document was developed by Public Health Ontario (PHO). PHO provides scientific and technical advice to Ontario s government, public health organizations and health care providers. PHO s work is guided by the current best available evidence. PHO assumes no responsibility for the results of the use of this document by anyone. This document may be reproduced without permission for non-commercial purposes only and provided that appropriate credit is given to Public Health Ontario. No changes and/or modifications may be made to this document without explicit written permission from Public Health Ontario. Technical report: Influenza immunization timing v
6 Contents Executive summary... 1 Purpose and methods... 1 Results... 1 Implications of the findings... 1 Influenza immunization timing... 2 Introduction... 2 Methods... 2 Results... 4 Discussion... 5 Conclusions... 7 Reference Technical report: Influenza immunization timing 1
7 Executive summary Purpose and methods This technical report assesses the timing of influenza immunization to determine whether delayed immunization negatively impacts the effectiveness of influenza immunization programs. The primary analysis assesses the timing of influenza immunization in relation to the circulation of influenza over five influenza seasons ( to ). Information on influenza circulation was obtained from influenza-confirmed specimens tested at the 16 Ontario laboratories that report to the Public Health Agency of Canada. Information on the timing of influenza vaccination for physicians and pharmacists was obtained based on administrative billing data held by the Institute for Clinical Evaluative Sciences (ICES). A secondary analysis outlines the missed opportunities resulting from delayed immunization, using composite data from the five influenza seasons. This information can be used to determine a target date for completion of influenza immunization. To maximize the impact of influenza immunization, immunization could be promoted to take place prior to that target date. Results The primary analysis found that in the four influenza seasons that started in mid-november and early December ( , , and ) between 21% and 52% of influenza vaccinations were given too late to achieve maximum benefit. In , the influenza season began in late January to mid-february (depending on the definition used), by which time the vast majority of people had been vaccinated. The secondary analysis identified potential missed opportunities to prevent influenza due to delayed vaccination for each week of a composite influenza season; the results can be found in Table 2. As an example, immunization after the first week in December occurs too late to potentially prevent an estimated 10% of cases in an average influenza season. Implications of the findings Late vaccination results in missed opportunities to prevent influenza infections and can decrease the potential impact of influenza immunization programs. Health care providers should consider strategies to improve the timeliness of influenza vaccination. Technical report: Influenza immunization timing ǀ 1
8 Influenza immunization timing Introduction This technical report assesses the timing of influenza immunization to determine whether delayed immunization negatively impacts influenza immunization programs. The primary analysis assesses the timing of influenza immunization in relation to the circulation of influenza over five influenza seasons ( to ). The timing of immunization provision by physicians offices and pharmacists by age of recipient is also reviewed. A secondary analysis outlines the missed opportunities that result from delayed immunization, using amalgamated data from the five previously indicated influenza seasons. This information can be used to determine a target date for completion of influenza immunization. To maximize the impact of influenza immunization, immunization could be promoted to take place prior to that target date. Methods The primary analysis involves determining the percent of individuals who were immunized by physicians offices or pharmacists before the start and peak of five influenza seasons (out of all the individuals immunized by these providers during those seasons). It should be noted that the analysis does not include influenza vaccines given by other providers, such as public health units or workplaces, as details on the timing of vaccine administration are not available for these providers. Health administrative data Health administrative data from September 1, 2010 to August 13, 2015 were used to determine the administration of influenza vaccines by physicians offices and pharmacists. Counts of physician billings claims from the Ontario Health Insurance Plan (OHIP) database a1 and pharmacist claims from the Ontario Drug Benefits (ODB) database b2 were extracted and grouped by week, based on the service date of the claim. Only the first claim for each person per influenza season was included. Over this five-year period, there were 13,027,715 claims (OHIP and ODB combined) submitted for 11,666,644 courses of influenza immunization (as some individuals require two doses during the same influenza season to be considered immunized). Some of these individuals were included multiple times over the five influenza seasons. In total, 4,745,534 unique individuals were vaccinated one or more times during the five-year period. a OHIP fee codes G590 and G591 b Drug Information Numbers , , , and Technical report: Influenza immunization timing 2
9 Seasonal influenza laboratory data The start and peak of each influenza season was determined using Ontario-specific laboratory data from the Respiratory Virus Detection Surveillance System. These data were compiled by the Public Health Agency of Canada s Centre for Immunization and Respiratory Infectious Diseases (CIRID). Ontariospecific data are based on submissions from 16 Ontario laboratories, consisting of the 11 Public Health Ontario Laboratories and five hospital-based laboratories. The start of influenza season was defined as the week when influenza percent positivity exceeded 10%. A sensitivity analysis was also conducted by defining the start of influenza season as 5% or 15% positivity. The peak of influenza activity was defined as the week when percent positivity was the highest for that season. The data were analyzed as follows: 1) The cumulative percentage of people immunized by week in physicians offices and by pharmacists combined (out of all the people immunized by these providers), compared to the influenza percent positivity by week. 2) The cumulative percentage of people immunized by week in physicians offices and by pharmacists combined (out of all the people immunized by these providers), compared to influenza percent positivity by week based on an adjusted analysis in which: the percentages of influenza positivity per week are shifted one week earlier to account for the approximate timing of influenza exposure (i.e., to take into account the elapsed time from infection to reporting of laboratory test results to the submitter, including symptom onset, seeking medical attention and performing laboratory testing); and the percentages of people immunized are shifted two weeks later to account for the maximum time period it takes for an immune response to develop. 1 3) Based on the original, unadjusted data, the weekly number of people immunized in physicians offices and by pharmacists are presented separately. This analysis is further stratified by age group as follows: 6 months to 19 years, 20 to 64 years, and 65 years. Secondary analysis To identify the potential missed opportunities that result from delayed influenza immunization and to determine possible target dates before which it is optimal to be immunized, a secondary analysis was conducted. In this secondary analysis, the numbers of laboratory-confirmed specimens from the Respiratory Virus Detection Surveillance System from to were combined by week of reporting into one composite influenza season. The cumulative percentage of influenza cases occurring in or before each week in this composite season was calculated. For the purposes of interpretation, each positive specimen is considered to represent one influenza case, although there is the possibility for specimens to be double-counted (e.g., more than one positive specimen reported per case and/or more than one positive result reported per specimen). Technical report: Influenza immunization timing 3
10 The results are presented showing the cumulative percentage of cases that occur in or before the influenza reporting week and the corresponding target vaccination week. The target vaccination week is three weeks prior to the reporting week in order to account for the following: The estimated one-week time lag from exposure to reporting of the laboratory-confirmed case; and The two-week maximum time period for an immune response to develop after vaccination 1. The percentage associated with each influenza reporting week is the cumulative percentage of cases reported in or before that week. The corresponding target vaccination week can be interpreted as representing the percentage of cases potentially missed (i.e., missed opportunity to prevent cases due to delayed immunization) if vaccination occurred after that week. This information can be used by policy makers and health care providers to establish a target vaccination date for promotion of influenza immunization. Results Cumulative vaccination rates compared to influenza positivity unadjusted data: Using a 10% positivity cut-off to define the start of the influenza season, four of the five seasons from to began in mid- November or early December and peaked in either late December or early January. The other season ( ) was mild and only began in mid-february, peaking in mid-march. In the four seasons that began in mid-november or early December, 73.6% to 92.5% of influenza vaccinations were given before the start of the influenza season. In the season, as expected because of its delayed start, 99.7% of influenza vaccinations were given before the start of the influenza season (see Table 1 and Figure 1). In the sensitivity analyses, using a more conservative estimate of the start of influenza season based on a weekly percent positivity of 5%, four of the five seasons began in November or early December. Using the 5% cut-off for the start of the season, 58.8% to 85.3% of influenza vaccinations in these four seasons were given before the start of the season. Using a less conservative cut-off for the start of the season of 15%, 82.9% to 92.5% of influenza vaccinations in these four seasons were given before the start of the season. For the four seasons with onset in November or December, 89.5% to 96.8% of vaccinations were given before the peak week of influenza positivity (see Table 1). Cumulative vaccination rates compared to influenza positivity adjusted data: In the four seasons that began in mid-november or early December, based on the 10% positivity definition and using the adjusted analysis, 47.7% to 79.3% of influenza vaccinations were given before the start of the influenza season. Using the 5% positivity to define the start of the season for these four seasons, 23.7% to 67.7% were given before the start of the season in the adjusted analysis; using 15% positivity as the start of the season, the percentages were 67.3% to 82.7%. Using the adjusted analysis Technical report: Influenza immunization timing 4
11 for these four seasons, 82.9% to 92.5% of vaccinations were given before the peak week (see Table 1 and Figure 2). See Table 1 and Figure 2 for the results of the adjusted analysis, and Table 1 and Figure 3 to compare the unadjusted and adjusted analyses. Vaccination rates by provider type and age unadjusted data: Figure 4 indicates the numbers of influenza vaccinations given in physicians offices and by pharmacists. Vaccinations by pharmacists began in the influenza season for those aged 5 years. The number of vaccinations provided by pharmacists increased progressively since Vaccination by pharmacists tended to start slightly later than vaccinations by physicians. During all three seasons when vaccinations by pharmacists were available, those aged 19 years and 65 years were more likely to be vaccinated in a physician s office. Unlike the earlier two seasons when physician vaccinations were more common, in the season, those aged 20 to 64 years were almost equally likely to be vaccinated by a pharmacist or in a physician s office (see Figures 5, 6 and 7). Composite season analysis by specific cut-off dates: Over this five-year period ( to ), there were 40,021 laboratory-confirmed influenza A and B positive specimens reported. Table 2 displays the percentage of cases that occurred in or before each influenza reporting week and corresponding vaccination target week in the composite five year season. As an example, 10.3% of cases occurred in or before influenza reporting week 51 (December 19 to December 25). Influenza reporting week 51 corresponds to vaccination target week 48; therefore, influenza vaccination after vaccination target week 48 (November 28 to December 4) occurred too late to prevent the 10.3% of cases in the composite season that were diagnosed in or prior to week 51. However, it should be noted that not all of these cases would have been prevented by earlier vaccination since the influenza vaccine is not 100% effective. Discussion Although there is variability in when influenza activity begins each year, in four of five years from to , activity began in mid-november or early December using a 10% positivity rate to define the beginning of the season. In these four seasons, 73.6% to 92.5% of influenza vaccinations were given before the start of the influenza season. However, using an adjusted analysis, only 47.7% to 79.3% of influenza vaccinations were given before the start of the influenza season in the four seasons that started in November or December. In other words, 20.7% to 52.3% of vaccinations were given too late to achieve maximum benefit. Technical report: Influenza immunization timing 5
12 There are several limitations to the analyses related to timing of influenza immunization. The extent to which laboratory test results can be relied on to indicate the start of the season is uncertain as the proportion of a season s cases diagnosed each week may not be representative of influenza activity due to variations in testing patterns over the course of the influenza season (i.e., since more testing is generally done earlier in an influenza season, a disproportionate number of cases will have a labconfirmed diagnosis earlier rather than later during a particular influenza season). Furthermore, the populations tested may not be representative of the general population with influenza, as those tested may be more likely to have underlying medical conditions or have complications such as hospitalizations. The validity of the use of a cut-off of 10% positivity of laboratory-confirmed samples to indicate the start of the season is arbitrary; therefore a sensitivity analysis was performed using a 5% and 15% cut-off. The percent positivity rates presented in this analysis are for influenza A and B combined. Generally influenza A occurs earlier in the influenza season, with influenza B activity occurring afterwards. Therefore later vaccination is less likely to prevent influenza A cases but more likely to be effective in the prevention of influenza B cases, assuming an appropriate match between vaccine and circulating strains. This analysis was based on billings by physicians offices and pharmacists and excluded other vaccine providers such as public health units and workplaces, as exact dates of administration are not available for these providers. Based on data from the Ministry of Health and Long Term Care for to , these other providers give only 9.2% to 16% of the total number of doses administered each year, with the majority of doses being given by pharmacists (7.9% to 26.9%) and in physicians offices (76.1% to 63.9%). Vaccination by pharmacists occurs somewhat later than in physicians offices, possibly due to when pharmacists receive the vaccine and when clients choose to present for vaccination at these locations. Vaccination by pharmacists is becoming increasingly popular, especially for those 20 to 64 years of age. In contrast, vaccination by public health has been decreasing from 8.7% in to 4.0% in (based on data from the Ministry of Health and Long Term Care). Using a composite season based on five years of laboratory-confirmed data, vaccination after the first week of December potentially misses the opportunity to prevent 10.3% of cases, recognizing that earlier vaccination would not prevent all of these cases given that vaccine effectiveness varies by year and is generally approximately 50% to 60% effective in healthy adults. 1 As expected, later vaccination dates miss the opportunity to prevent even more cases. As the timing of influenza seasons varies from year to year, this represents an average estimate only. Additionally, if laboratory testing tends to occur more frequently earlier in the influenza season than later on, this may inflate the percentage of cases that represent missed opportunities for prevention. Based on the information provided in Table 1 for the seasons that began in November and December, 83% to 92% of influenza vaccinations were provided by Technical report: Influenza immunization timing 6
13 approximately the first week in December, leaving some room for improvement in the timing of the provision of influenza vaccination if that week was chosen as a target. These data highlight the importance of minimizing late vaccination to optimize the impact of influenza immunization. Facilitation of early vaccination could include obtaining the vaccine from suppliers as early as possible, but this may be beyond provincial control. Therefore efforts should focus on distributing the vaccine to providers as soon as it is provincially available. Promotional efforts targeted at providers, including pharmacists, and the public could encourage influenza vaccination as soon as it is available. The missed opportunities to prevent influenza by delaying vaccination could be emphasized. Choosing a target date and promoting influenza vaccination prior to this date may decrease late vaccination and decrease missed opportunities to prevent influenza. Although waning immunity is potentially a concern later in the influenza season, its impact is not well understood. Further studies are required to assess the impact of waning immunity and its importance with respect to the timing of influenza vaccine administration. Conclusions Late vaccination misses opportunities to prevent influenza infections and can decrease the potential impact of influenza immunization programs. Strategies to improve the timeliness of influenza vaccination can improve the impact of influenza vaccination programs, including strategies targeted at pharmacists who are delivering increasing numbers of influenza vaccinations each year. Technical report: Influenza immunization timing 7
14 Table 1: Percentage of people vaccinated by the start and the peak of influenza season, using (i) original unadjusted data based on vaccination dates and laboratory-reported dates, and (ii) data adjusting for delays in immunity and influenza exposure dates; Ontario, to Season Influenza activity based on percent positivity b Start week Unadjusted data Cumulative % Vaccinated Adjusted data a Cumulative % Vaccinated >5% Nov 21, % 48.1% >10% Dec 5, % 69.3% >15% Dec 12, % 76.1% Peak week Jan 2, % 88.4% >5% Jan 29, % 97.8% >10% Feb 19, % 99.2% >15% Feb 26, % 99.5% Peak week Mar 18, % 99.8% >5% Nov 4, % 23.7% >10% Nov 18, % 47.7% >15% Dec 2, % 67.3% Peak week Dec 23, % 82.9% >5% Dec 1, % 67.7% >10% Dec 8, % 74.4% >15% Dec 22, % 82.7% Peak week Dec 29, % 85.3% >5% Nov 23, % 58.8% >10% Dec 7, % 79.3% >15% Dec 7, % 79.3% Peak week Dec 28, % 92.5% a Start week for adjusted data is 7 days before start week of original unadjusted data and vaccination date is shifted two weeks later to account for delays in mounting an immune response b Peak week = week when % positivity was the highest in the season Technical report: Influenza immunization timing 8
15 Figure 1. Cumulative percentage of people vaccinated versus weekly influenza percent positivity; Ontario, to Figure 2. Cumulative percentage of people vaccinated versus weekly influenza percent positivity (adjusted); Ontario, to Technical report: Influenza immunization timing 9
16 Figure 3. Cumulative percentage of people vaccinated versus weekly influenza percent positivity (original unadjusted and adjusted data superimposed); Ontario, to Figure 4. Number of people vaccinated at physicians offices and by pharmacists versus weekly influenza percent positivity; Ontario, to Technical report: Influenza immunization timing 10
17 Figure 5. Number of people 6 months to 19 years of age vaccinated at physicians offices and by pharmacists versus weekly influenza percent positivity; Ontario, to Figure 6. Number of people 20 to 64 years of age vaccinated at physicians offices and by pharmacists versus weekly influenza percent positivity; Ontario, to Technical report: Influenza immunization timing 11
18 Figure 7. Number of people 65 years of age and over vaccinated at physicians offices and by pharmacists versus weekly influenza percent positivity; Ontario, to Technical report: Influenza immunization timing 12
19 Table 2. Cumulative percentage of laboratory-confirmed influenza cases that occur in or before specific weeks. Ontario; composite from to Influenza reporting week number (approximate dates) Vaccination target week number (approximate dates) Cumulative percentage of cases that were diagnosed in or before the influenza reporting week or the vaccination target week 39 (Sept 26 Oct 2) 36 (Sept 5 Sep 11) 0.1% 40 (Oct 3 Oct 9) 37 (Sept 12 Sept 18) 0.2% 41 (Oct 10 Oct 16) 38 (Sept 19 Sept 25) 0.2% 42 (Oct 17 Oct 23) 39 (Sept 26 Oct 2) 0.3% 43 (Oct 24 Oct 30) 40 (Oct 3 Oct 9) 0.4% 44 (Oct 31 Nov 6 ) 41 (Oct 10 Oct 16) 0.5% 45 (Nov 7 Nov 13) 42 (Oct 17 Oct 23) 0.7% 46 (Nov 14 Nov 20) 43 (Oct 24 Oct 30) 1.1% 47 (Nov 21- Nov 27) 44 (Oct 31 Nov 6 ) 1.7% 48 (Nov 28 Dec 4) 45 (Nov 7 Nov 13) 2.6% 49 (Dec 5 Dec 11) 46 (Nov 14 Nov 20) 4.2% 50 (Dec 12 Dec 18) 47 (Nov 21- Nov 27) 7.1% 51 (Dec 19 Dec 25) 48 (Nov 28 Dec 4) 10.3% 52 (Dec 26 Jan 1 ) 49 (Dec 5 Dec 11) 20.2% 1 (Jan 2 Jan 8) 50 (Dec 12 Dec 18) 30.8% 2 (Jan 9 Jan 15) 51 (Dec 19 Dec 25) 41.1% 3 (Jan 16 Jan 22) 52 (Dec 26 Jan 1 ) 50.4% 4 (Jan 23 Jan 29) 1 (Jan 2 Jan 8) 57.1% 5 (Jan 30 Feb 5) 2 (Jan 9 Jan 15) 62.4% Technical report: Influenza immunization timing 13
20 Influenza reporting week number (approximate dates) Vaccination target week number (approximate dates) Cumulative percentage of cases that were diagnosed in or before the influenza reporting week or the vaccination target week 6 (Feb 6 Feb 12) 3 (Jan 16 Jan 22) 66.8% 7 (Feb 13 Feb 19) 4 (Jan 23 Jan 29) 70.2% 8 (Feb 20 Feb 26) 5 (Jan 30 Feb 5) 73.3% 9 (Feb 27 Mar 5) 6 (Feb 6 Feb 12) 76.2% 10 (Mar 6 Mar 12) 7 (Feb 13 Feb 19) 79.2% 11 (Mar 13 Mar 19) 8 (Feb 20 Feb 26) 82.3% 12 (Mar 20 Mar 26) 9 (Feb 27 Mar 5) 85.3% 13 (Mar 27 Apr 2) 10 (Mar 6 Mar 12) 87.8% 14 (Apr 3 Apr 9) 11 (Mar 13 Mar 19) 90.0% 15 (Apr 10 Apr 16) 12 (Mar 20 Mar 26) 92.5% 16 (Apr 17 Apr 23) 13 (Mar 27 Apr 2) 94.4% 17 (Apr 24 Apr 30) 14 (Apr 3 Apr 9) 96.0% 18 (May 1 May 7) 15 (Apr 10 Apr 16) 97.3% 19 (May 8 May 14) 16 (Apr 17 Apr 23) 98.3% 20 (May 15 May 21) 17 (Apr 24 Apr 30) 98.9% 21 (May 22 May 28) 18 (May 1 May 7) 99.2% 22 (May 29 June 4) 19 (May 8 May 14) 99.4% 23 (June 5 June 11) 20 (May 15 May 21) 99.5% 24 (June 12 June 18) 21 (May 22 May 28) 99.6% 25 (June 19 June 25) 22 (May 29 June 4) 99.7% 26 (June 26 July 2) 23 (June 5 June 11) 99.7% Technical report: Influenza immunization timing 14
21 Influenza reporting week number (approximate dates) Vaccination target week number (approximate dates) Cumulative percentage of cases that were diagnosed in or before the influenza reporting week or the vaccination target week 27 (July 3 July 9) 24 (June 12 June 18) 99.8% 28 (July 10 July 16) 25 (June 19 June 25) 99.8% 29 (July 17 July 23) 26 (June 26 July 2) 99.9% 30 (July 24 July 30) 27 (July 3 July 9) 99.9% 31 (July 31 Aug 6) 28 (July 10 July 16) 99.9% 32 (Aug 7 Aug 13) 29 (July 17 July 23) 100.0% 33 (Aug 14 Aug 20) 30 (July 24 July 30) 100.0% 34 (Aug 21 Aug 27) 31 (July 31 Aug 6) 100.0% 35 (Aug 28 Sept 3) 32 (Aug 7 Aug 13) 100.0% 36 (Sept 5 Sep 11) 33 (Aug 14 Aug 20) 100.0% 37 (Sept 12 Sept 18) 34 (Aug 21 Aug 27) 100.0% 38 (Sept 19 - Sept 25) 35 (Aug 28 Sept 3) 100.0% Interpretation note: Compared to the influenza reporting week, the vaccination target week takes into account the exposure time and time to mount an immune response. The percentages in the third column represent missed opportunities to prevent cases if influenza vaccination is delayed until after this target week. For example, immunization after vaccination target week 48 (column 2) is potentially too late to prevent 10.3% of cases. This is based on the percentage of cases that occurred in or before influenza reporting week 51 (column 1) in the composite five-year season (see highlighted week). Note that this is only an example and is not intended to suggest that this should be the target week for vaccination in Ontario. It should also be noted that earlier vaccination would not prevent all cases since influenza vaccine is not 100% effective. Technical report: Influenza immunization timing 15
22 Reference 1. National Advisory Committee on Immunization; Public Health Agency of Canada. An Advisory Committee Statement (ACS) National Advisory Committee on Immunization (NACI) statement on seasonal influenza vaccine for [Internet]. Ottawa, ON; 2016 [updated 2015 Sep 30; cited 2016 Apr 4]. Available from Technical report: Influenza immunization timing 16
23 Public Health Ontario 480 University Avenue, Suite 300 Toronto, Ontario M5G 1V Technical report: Influenza immunization timing 17
The relationship between influenza medical risk factors and age
The relationship between influenza medical risk factors and age Technical report March 2017 Public Health Ontario Public Health Ontario is a Crown corporation dedicated to protecting and promoting the
More informationONTARIO RESPIRATORY PATHOGEN BULLETIN. Assessment of Influenza Activity in Ontario
ONTARIO RESPIRATORY PATHOGEN BULLETIN Surveillance Week 44: (October 28, 2018 - November 3, 2018) This issue of the Ontario Respiratory Pathogen Bulletin provides information on the surveillance period
More informationONTARIO RESPIRATORY PATHOGEN BULLETIN. Assessment of Influenza Activity in Ontario
ONTARIO RESPIRATORY PATHOGEN BULLETIN Surveillance Week 49: (December 2, 2018 - December 8, 2018) This issue of the Ontario Respiratory Pathogen Bulletin provides information on the surveillance period
More informationINFLUENZA Surveillance Report Influenza Season
Health and Wellness INFLUENZA Surveillance Report 2011 2012 Influenza Season Population Health Assessment and Surveillance Table of Contents Introduction... 3 Methods... 3 Influenza Cases and Outbreaks...
More informationONTARIO RESPIRATORY PATHOGEN BULLETIN. Assessment of Influenza Activity in Ontario
ONTARIO RESPIRATORY PATHOGEN BULLETIN Surveillance Week 1: (December 30, 2018 - January 5, 2019) This issue of the Ontario Respiratory Pathogen Bulletin provides information on the surveillance period
More informationOntario Influenza Bulletin I SURVEILLANCE WEEK 43 (October 23, 2011 October 29, 2011)
Ontario Influenza Bulletin I 2011-2012 SURVEILLANCE WEEK 43 (October 23, 2011 October 29, 2011) This issue of the Ontario Influenza Bulletin provides information on the surveillance period from October
More informationWeekly Influenza News 2016/17 Season. Communicable Disease Surveillance Unit. Summary of Influenza Activity in Toronto for Week 43
+ Weekly / Influenza News Week 43 (October 23 to October 29, 2016) Summary of Influenza Activity in Toronto for Week 43 Indicator (Click on the indicator Activity Level * Description name for more details)
More informationAlberta Health. Seasonal Influenza in Alberta. 2016/2017 Season. Analytics and Performance Reporting Branch
Alberta Health Seasonal Influenza in Alberta 2016/2017 Season Analytics and Performance Reporting Branch September 2017 For more information contact: Analytics and Performance Reporting Branch Health Standards,
More informationINFLUENZA IN MANITOBA 2010/2011 SEASON. Cases reported up to October 9, 2010
INFLUENZA IN MANITOBA 2/211 SEASON Cases reported up to October 9, 2 The public health disease surveillance system of Manitoba Health received its first laboratory-confirmed positive case of influenza
More informationINFLUENZA IN MANITOBA 2010/2011 SEASON. Cases reported up to January 29, 2011
INFLUENZA IN MANITOBA 21/211 SEASON Cases reported up to January 29, 211 The public health disease surveillance system of Manitoba Health received its first laboratory-confirmed positive case of influenza
More informationDurham Region Influenza Bulletin: 2017/18 Influenza Season
Durham Region Influenza Bulletin: 2017/18 Influenza Season Surveillance Week 21 (May 20, 2018 to May 26, 2018) Table 1: Assessment of influenza activity in Durham Region Measure Laboratory confirmed cases
More informationVector-Borne Diseases Summary Report
Vector-Borne Diseases 2016 Summary Report June 2017 Public Health Ontario Public Health Ontario is a Crown corporation dedicated to protecting and promoting the health of all Ontarians and reducing inequities
More informationReport to/rapport au : Ottawa Board of Health Conseil de santé d Ottawa. Monday October /le lundi 15 octobre 2012
Report to/rapport au : Ottawa Board of Health Conseil de santé d Ottawa Monday October 15 2012/le lundi 15 octobre 2012 Submitted by/soumis par : Dr./D r Isra Levy, Medical Officer of Health/Médecin chef
More informationTo view an archived recording of this presentation please click the following link:
To view an archived recording of this presentation please click the following link: http://pho.adobeconnect.com/pipr4mxgx1rb/ Please scroll down this file to view a copy of the slides from the session.
More informationCommunity Influenza Surveillance Report Update of Current Status January 9 th, 2019
218-219 Community Influenza Surveillance Report Update of Current Status January 9 th, 219 First report of 219 This is the first Community Influenza Surveillance Report of 219 and covers the three-week
More informationVaccine Safety: Its everyone s business! PHO Rounds: Nov 19, 2013
Vaccine Safety: Its everyone s business! PHO Rounds: Nov 19, 2013 Tara Harris, Nurse Consultant Shelley Deeks, Medical Director Immunization and Vaccine Preventable Diseases 1 Learning objectives 1. Describe
More information2017/18 Influenza Season Summary
2017/18 Influenza Season Summary April 2019 Author Dinna Lozano, Epidemiologist Planning and Evaluation Services Email: research@healthunit.ca Contents Key Findings... 2 Influenza Rates over Time... 2
More informationReview of Influenza Activity in San Diego County
2015 Kick the Flu Summit Review of Influenza Activity in San Diego County 2014-2015 Season Jeffrey Johnson, MPH Senior Epidemiologist Epidemiology & Immunization Services Branch Public Health Services
More informationWeek 11: March 11 to March 17, 2018
2017/18 Season Week in Review: Week 11: March 11 to March 17, 2018 Influenza Activity Indicator Assessment of Indicator* Interpretation Reported cases Percent Positive of Flu Specimens Local Institutional
More informationWeek 15: April 8 to April 14, 2018
2017/18 Season Week in Review: Week 15: April 8 to April 14, 2018 Influenza Activity Indicator Assessment of Indicator* Interpretation Reported cases Percent Positive of Flu Specimens Local Institutional
More informationAlberta Health. Seasonal Influenza in Alberta Season. Analytics and Performance Reporting Branch
Alberta Health Seasonal Influenza in Alberta 2015-2016 Season Analytics and Performance Reporting Branch August 2016 For more information contact: Analytics and Performance Reporting Branch Health Standards,
More informationThe Influenza Season Stephen L. Cochi, M.D., M.P.H. Acting Director National Immunization Program, CDC
The Influenza Season 2003-04 Stephen L. Cochi, M.D., M.P.H. Acting Director National Immunization Program, CDC 2003-2004 Influenza Season Influenza activity onset earlier than usual Children appeared disproportionately
More informationSurveillance and epidemiology. Natasha S. Crowcroft Director, Surveillance and Epidemiology
Surveillance and epidemiology of 2009 pandemic H1N1 Natasha S. Crowcroft Director, Surveillance and Epidemiology 1 Outline Where did we start and what did we learn? Where are we now? Lessons learned nationally
More informationTarrant County Influenza Surveillance Weekly Report CDC Week 43: Oct 22-28, 2017
Tarrant County Public Health Division of Epidemiology and Health Information Tarrant County Influenza Surveillance Weekly Report 43: Oct 22-28, 2017 Influenza Activity Code: County and State Levels Tarrant
More informationTarrant County Influenza Surveillance Weekly Report CDC Week 17: April 22-28, 2018
Tarrant County Public Health Division of Epidemiology and Health Information Tarrant County Influenza Surveillance Weekly Report 17: April 22-28, 2018 Influenza Activity Code: County and State Levels Tarrant
More informationTarrant County Influenza Surveillance Weekly Report CDC Week 51: Dec 17-23, 2017
Tarrant County Public Health Division of Epidemiology and Health Information Tarrant County Influenza Surveillance Weekly Report 51: Dec 17-23, 2017 Influenza Activity Code: County and State Levels Tarrant
More informationTarrant County Influenza Surveillance Weekly Report CDC Week 4: Jan 21-27, 2018
Tarrant County Public Health Division of Epidemiology and Health Information Tarrant County Influenza Surveillance Weekly Report 4: Jan 21-27, 2018 Influenza Activity Code: County and State Levels Tarrant
More informationTarrant County Influenza Surveillance Weekly Report CDC Week 11: Mar 10-16, 2019
Tarrant County Public Health Division of Epidemiology and Health Information Tarrant County Influenza Surveillance Weekly Report 11: Mar 10-16, 2019 Influenza Activity Code: County and State Levels Tarrant
More informationRecommendations for Human Papillomavirus Vaccination Provincial Infectious Diseases Advisory Committee on Immunization
Recommendations for Human Papillomavirus Vaccination Provincial Infectious Diseases Advisory Committee on Immunization June 11, 2012 i This document was prepared for the Provincial Infectious Diseases
More informationPast Influenza Pandemics
Outline Background Pandemic Response in Oman Pre Pandemic Phase Pandemic Phase Post Pandemic Phase p(h1n1) vaccination strategy Cost of Pandemic Impact on Health System Lessons learnt Conclusions 2 Oman..
More information* Rates were not calculated due to small numbers.
Manitoba Health, Healthy Living and Seniors (MHHLS) Influenza Surveillance `Week 215 216 53: Dec 28, 214 Jan 3, 215 Week 48 (Nov.29 Dec.5, 215) Data extracted Dec.11, 215 at 11: am Laboratory-confirmed
More informationOutbreak Response/Epidemiology Influenza Weekly Report Arkansas
Nathaniel Smith, MD, MPH, Director and State Health Officer Outbreak Response/Epidemiology Influenza Weekly Report Arkansas 2018-2019 Week Ending Saturday 10/20/2018 Dirk Haselow, MD, PhD State Epidemiologist,
More informationAlberta Respiratory Virus Surveillance Report Update for Flu Week 5 (Jan 26 Feb 1, 2014)
Update for (Jan 26 Feb 1, 14) Weekly Update February 4, 14 The purpose of this report is to inform Public Health staff, primary care providers, acute care staff and other community practitioners about
More informationNova Scotia s Response to H1N1. Summary Report
Nova Scotia s Response to H1N1 Summary Report December 2010 H1N1 Summary Report l 1 Introduction In April 2009, an outbreak of a new virus called H1N1 influenza was identified in Veracruz, Mexico. As the
More informationAlberta Respiratory Virus Surveillance Report Update for Flu Week 3 (Jan 12-18, 2014)
Update for 3 (Jan 12-18, 214) Weekly Update January 21, 214 The purpose of this report is to inform Public Health staff, primary care providers, acute care staff and other community practitioners about
More informationCommunity Influenza Surveillance Report Update of Current Status January 24, 2018
2017-2018 Community Influenza Surveillance Report Update of Current Status January 24, 2018 Overall assessment Influenza activity, particularly influenza B, continues to be high in the Middlesex-London
More informationRegion of Waterloo Public Health and Emergency Services Infectious Diseases, Dental, and Sexual Health
Region of Waterloo Public Health and Emergency Services Infectious Diseases, Dental, and Sexual Health To: Chair Geoff Lorentz and Members of the Community Services Committee Date: March 2, 218 File Code:
More informationAspartate Aminotransferase Testing in Community-Based Laboratories: An Expert Consultation
Aspartate Aminotransferase Testing in Community-Based Laboratories: An Expert Consultation B McCurdy June 2013 Aspartate Aminotransferase Testing in Community-Based Laboratories. June 2013; pp. 1 11. Suggested
More informationInfluenza and Respiratory Infection Surveillance Summary Report: Season
Influenza and Respiratory Infection Surveillance Summary Report: 2012 13 Season SURVEILLANCE REPORT March 2015 Public Health Ontario Public Health Ontario is a Crown corporation dedicated to protecting
More informationHospital Norovirus Outbreak Reporting
Second Report of the Health Protection Agency. Hospital Norovirus Outbreak Reporting Summary findings In January 2009 the HPA in conjunction with the Infection Prevention Society launched a voluntary National
More informationManitoba Health, Healthy Living and Seniors (MHHLS) Week 9 (Feb.28 Mar.5, 2016) == Severe outcomes associated with. == Cases and cumulative incidence
Manitoba Health, Healthy Living and Seniors (MHHLS) Influenza Surveillance `Week 215 216 53: Dec 28, 214 Jan 3, 215 Week 9 (Feb.28 Mar.5, 216) Data extracted Mar. 11, 216 at 11: am Laboratory-confirmed
More informationFlu Watch. MMWR Week 3: January 14 to January 20, and Deaths. Virologic Surveillance. Influenza-Like Illness Surveillance
Flu Watch MMWR Week 3: January 14 to January 2, 218 All data are provisional and subject to change as more reports are received. Geographic Spread South Carolina reported widespread activity this week.
More informationANNUAL INFLUENZA IMMUNIZATION POLICY
1.0 POLICY The Chief Public Health Office (CPHO), Department of Health and Wellness (HW), will make available influenza vaccine free of charge annually to Islanders over 6 months of age as part of the
More informationph1n1 H3N2: A Novel Influenza Virus Reassortment
ph1n1 H3N2: A Novel Influenza Virus Reassortment Jonathan Gubbay Medical Microbiologist Public Health Laboratory Public Health Ontario June 16, 2011 ph1n1 H3N2 Reassortment: Talk Overview Explain strain
More informationPost-exposure prophylaxis (PEP)
Post-exposure prophylaxis (PEP) Summary Post-exposure prophylaxis, or PEP, is a way to help prevent the transmission of HIV in an HIV-negative person who may have been recently exposed to HIV. It involves
More informationTo view an archived recording of this presentation please click the following link:
To view an archived recording of this presentation please click the following link: http://pho.adobeconnect.com/p5kbxbzgk8z/ Please scroll down this file to view a copy of the slides from the session.
More informationOntario Respiratory Pathogen Bulletin I
Ontario Respiratory Pathogen Bulletin I 2017-2018 SURVEILLANCE WEEK 3 (January 14, 2018 January 20, 2018) This issue of the Ontario Respiratory Pathogen Bulletin provides information on the surveillance
More informationAlberta Health. Seasonal Influenza in Alberta Season Summary
Alberta Health Seasonal Influenza in Alberta 217 218 Season Summary September 218 Seasonal Influenza in Alberta, 217-218 Season Summary September 218 Suggested Citation: Government of Alberta. Seasonal
More informationFlu Watch. MMWR Week 4: January 21 to January 27, and Deaths. Virologic Surveillance. Influenza-Like Illness Surveillance
Flu Watch MMWR Week 4: January 21 to January 27, 218 All data are provisional and subject to change as more reports are received. Geographic Spread South Carolina reported widespread activity this week.
More informationTarrant County Influenza Surveillance Weekly Report CDC Week 39: Sept 23-29, 2018
Tarrant County Public Health Division of Epidemiology and Health Information Tarrant County Influenza Surveillance Weekly Report 39: Sept 23-29, 2018 Influenza Activity Code: County and State Levels Tarrant
More informationIntroduction to the POWER Study Chapter 1
ONTARIO WOMEN S HEALTH EQUITY REPORT Introduction to the POWER Study Chapter 1 AUTHORS Susan K. Shiller, MSc Arlene S. Bierman, MD, MS, FRCPC INSIDE Why do we need a Women s Health Equity Report in Ontario?
More informationOttawa Public Health Respiratory and Enteric Surveillance Report December 23-29, 2018 (Week 52)
Ottawa Public Health Respiratory and Enteric Surveillance Report December 23-29, 2018 (Week 52) This report provides a overview of the current Influenza season in the City of Ottawa, Ontario. For information
More informationLaboratory Evidence of Human Viral and Selected Non-viral Infections in Canada
Canada Communicable Disease Report ISSN 1188-4169 Date of publication: October 1998 Volume 24S7 Supplement Laboratory Evidence of Human Viral and Selected Non-viral Infections in Canada 1989 to 1996 Our
More informationSummary of Current Respiratory Season and Genetic Analysis of Influenza Virus Circulating in Alberta
Laboratory Bulletin Date: February 28, 2013 To: From: Re: Alberta Health, Alberta MicroNet, Communicable Disease Nurses, Infectious Diseases Physicians, Infection Prevention and Control, Medical Officers
More informationOntario Novel H1N1 Influenza A Virus Epidemiologic Summary June 4, 2009 As of 8:30am, June 4, 2009
Ontario Novel H1N1 Influenza A Virus Epidemiologic Summary June 4, 29 As of 8:3am, June 4, 29 Background On April 2, 29, the Public Health Agency of Canada alerted the Ministry of Health and Long-Term
More informationSpring Understanding the potential of generic substitution
Spring 2014 Understanding the potential of generic substitution Understanding the potential of generic substitution Generic pricing reforms and the availability of generics for blockbuster drugs coming
More informationPre-Budget Submission to the Government of Ontario. Submitted December 2018
Pre-Budget Submission to the Government of Ontario Submitted December 2018 Epilepsy And Seizures Pre-Budget Submission Epilepsy is a neurological disease characterized by recurrent seizures. Seizures can
More informationOutbreak Response/Epidemiology Influenza Weekly Report Arkansas
Nathaniel Smith, MD, MPH, Director and State Health Officer Outbreak Response/Epidemiology Influenza Weekly Report Arkansas 7- Week Ending Saturday // Dirk Haselow, MD, PhD State Epidemiologist, Medical
More informationTRUST WIDE DOCUMENT DOCUMENT NUMBER: ELHT Version 1
i TRUST WIDE DOCUMENT DOCUMENT TITLE: SEASONAL INFLUENZA PLAN DOCUMENT NUMBER: ELHT Version 1 DOCUMENT PURPOSE: Seasonal Influenza (Flu) Plan sets out a coordinated and evidence-based approach to planning
More informationVector-Borne Diseases Summary Report
Vector-Borne Diseases 2012 Summary Report Public Health Ontario Public Health Ontario is a Crown corporation dedicated to protecting and promoting the health of all Ontarians and reducing inequities in
More informationWEEKLY NEW BRUNSWICK INFLUENZA REPORT Reporting period: October 9, 2011 October 15, 2011 (week 41)
WEEKLY NEW BRUNSWICK INFLUENZA REPORT Reporting period: October 9, 211 October 15, 211 (week 41) Summary In New Brunswick, low influenza activity for week 41 and within expected levels New Brunswick: There
More informationSPECIAL ISSUE. brief WINTER Flu Prevention and Response Planning. By Brett Lee and Colleen Honnors, RN, BSN
SPECIAL ISSUE brief WINTER 2018 Flu Prevention and Response Planning By Brett Lee and Colleen Honnors, RN, BSN SPECIAL ISSUE BRIEF WINTER 2018 2018 The American Seniors Housing Association All rights reserved.
More informationImmunization Coverage Report for School Pupils in Ontario School Year
Immunization Coverage Report for School Pupils in Ontario 2016 17 School Year Technical Report August 2018 Public Health Ontario Public Health Ontario is a Crown corporation dedicated to protecting and
More informationSeasonal Influenza in Alberta 2010/2011 Summary Report
Seasonal Influenza in Alberta 21/211 Summary Report Government of Alberta October 211 ISSN 1927-4114, Surveillance and Assessment Branch Send inquiries to: Health.Surveillance@gov.ab.ca Executive Summary
More informationFull Season Immunization: A New Paradigm Is Evolving Update
Full Season Immunization: A New Paradigm Is Evolving 28 Update Why Is a New Paradigm Needed? It is medically relevant to vaccinate throughout the entire influenza season Influenza immunization recommendations
More informationREPORT Meeting Date: July 4, 2013 Regional Council
REPORT Meeting Date: July 4, 2013 Regional Council DATE: REPORT TITLE: REVIEW OF PEEL PUBLIC HEALTH INFLUENZA IMMUNIZATION CLINICS AND INCLUSION OF PHARMACISTS IN ONTARIO'S UNIVERSAL INFLUENZA IMMUNIZATION
More informationReal-time Intelligence on Opioidrelated Health Impacts in Ontario
Real-time Intelligence on Opioidrelated Health Impacts in Ontario Brian Schwartz, Chief, Emergency Preparedness, Public Health Ontario Melissa Helferty, Epidemiologist, Ministry of Health and Long-Term
More informationWeek 11 (Mar.13 19, 2016)
Manitoba Health, Healthy Living and Seniors (MHHLS) Influenza Surveillance `Week 215 216 53: Dec 28, 214 Jan 3, 215 Week 11 (Mar.13 19, 216) Data extracted Mar. 24, 216 at 11: am Laboratory-confirmed influenza
More informationInfluenza Season: Our Annual Epidemic
2016-2017 Influenza Season: Our Annual Epidemic Kieran Moore AMOH KFLA Piotr Oglaza PHPM Resident KFLA October 2016 Working together for better health Acknowledgements Dr Bryna Warshawsky Public Health
More informationInfluenza Season, Boston
2017-2018 Influenza Season, Boston Infectious Disease Bureau SLIDE 1 Influenza Surveillance, Boston, 2017-2018 The 2017-2018 influenza season refers to the period between 10/1/2017-5/5/2018. Influenza
More informationINFLUENZA IN CANADA SEASON
FAX FAX FAX FAX Contained in this FAX issue: (No. of pages: 6) Vol. 23 24 INFLUENZA IN CANADA 1996-1997 SEASON................ F-1 185-192 Date of publication: 15 December 1997 Official page numbers: For
More informationQuestions and Answers for Health Care Worker (HCW) Influenza Immunization Coverage Reporting by Ontario Hospitals and Long-Term Care Homes (LTCHs)
Questions and Answers for Health Care Worker (HCW) Influenza Immunization Coverage Reporting by Ontario Hospitals and Long-Term Care Homes (LTCHs) Part 1: Reporting for the 2016-2017 season 1. Are HCW
More information2016/17 SEASONAL INFLUENZA VACCINE COVERAGE IN CANADA
2016/17 SEASONAL INFLUENZA VACCINE COVERAGE IN CANADA PROTECTING AND EMPOWERING CANADIANS TO IMPROVE THEIR HEALTH TO PROMOTE AND PROTECT THE HEALTH OF CANADIANS THROUGH LEADERSHIP, PARTNERSHIP, INNOVATION
More informationSeasonality of influenza activity in Hong Kong and its association with meteorological variations
Seasonality of influenza activity in Hong Kong and its association with meteorological variations Prof. Paul Chan Department of Microbiology The Chinese University of Hong Kong Mr. HY Mok Senior Scientific
More informationPublic Health Physicians and Vaccine Safety
Public Health Physicians and Vaccine Safety PHO Rounds January 21, 2013 Shelley Deeks, Medical Director Tara Harris, Nurse Consultant Immunization and Vaccine Preventable Diseases Outline and objectives
More informationManitoba Influenza Surveillance Report
Manitoba Influenza Surveillance Report 2012/2013 Season Week 14 Mar 31 Apr 6, 2013 Mar 31 - Apr 6: The proportion of patients visiting sentinel physicians for influenza-likeillness was 11% (up from 0%
More informationPursuant to CRTC Decisions CRTC and CRTC : Notice of Completion of 211 Service throughout the Province of Ontario
Pursuant to CRTC Decisions CRTC 2001-475 and CRTC 2008-61: Notice of Completion of 211 Service throughout the Province of Ontario Date: January 11 th, 2010 Organization: Ontario 211 Services Corporation
More informationWeek 43 (Oct , 2016)
Manitoba Health, Seniors and Active Living (MHSAL) Laboratory-confirmed influenza cases this week: Influenza A cases: 3 Influenza B cases: Since Sept. 1, 216: Influenza A cases: 8 Influenza B cases: 1
More informationConfounding in influenza VE studies in seniors, and possible solutions
Confounding in influenza VE studies in seniors, and possible solutions Michael L. Jackson Group Health Research Institute 4 th December, 2012 1 Outline Focus is on non-specific outcomes (e.g. community-acquired
More informationPANDEMIC POLICY. 1. It is important to understand the definitions of influenza (the flu) and pandemic ; attached is a comparison chart.
Section: D Policy Number: D-008 Subject: Pandemic Total Pages: 6 Approval Date: Nov. 18, 2009 Revision Date(s) PANDEMIC POLICY Community Living-Central Huron is committed to providing a safe and healthy
More informationIntroducing the Flu and Other Respiratory Viruses Research (FOREVER) Cohort, a laboratory partnership for data sharing
Introducing the Flu and Other Respiratory Viruses Research (FOREVER) Cohort, a laboratory partnership for data sharing JEFF KWONG PHO GRAND ROUNDS JULY 25, 2017 1 Financial disclosures No financial conflicts
More informationANNUAL INFLUENZA REPORT,
Manitoba Health, Healthy Living and Seniors ANNUAL INFLUENZA REPORT, 214 215 July 1, 214 June 3, 215 Epidemiology & Surveillance Public Health Branch Public Health and Primary Health Care Division December,
More informationPurpose of Lyme disease estimated risk areas map
Purpose of Lyme disease estimated risk areas map The Ontario Lyme Disease Map: Estimated Risk Areas is updated annually. The purpose of the map is to assist local public health units as they conduct Lyme
More informationSummary: Sustained Influenza B Activity
Manitoba Health, Seniors and Active Living (MHSAL) Influenza Surveillance Report `Week 2017 2018 53: Dec 28, 2014 Jan 3, 2015 Summary: Sustained Influenza B Activity Week 9 (Feb. 25 Mar. 3, 2018) Data
More informationAssessing Change with IIS. Steve Robison Oregon Immunization Program
Assessing Change with IIS Steve Robison Oregon Immunization Program Assessing Change with IIS Steve Robison Oregon Immunization Program Overview IIS Use in Public Health Static vs Dynamic Assessment Working
More informationNext report date: May 27 (May 8 21)
Manitoba Health, Healthy Living and Seniors (MHHLS) Influenza Surveillance `Week 215 216 53: Dec 28, 214 Jan 3, 215 Week 17 & 18 (Apr.24 May 7, 216) Data extracted May 13, 216 at 11: am Next report date:
More informationINFLUENZA EPIDEMIOLOGY IN KENYA
Epidemiology of influenza in Kenya 3 rd Annual African Network for Influenza Surveillance and Epidemiology(ANISE) meeting, February 1 st 2012, Nairobi -Kenya Presented by ; Dr. Phillip M. Muthoka, Influenza
More informationNo Laboratory-confirmed Influenza Activity
Manitoba Health, Seniors and Active Living (MHSAL) Influenza Surveillance Report `Week 2018 2019 53: Dec 28, 2014 Jan 3, 2015 No Laboratory-confirmed Influenza Activity Week 38 39 (Sep. 16 29, 2018) Data
More informationB.C. s Response to the H1N1 Pandemic. A Summary Report
B.C. s Response to the H1N1 Pandemic A Summary Report June 2010 ii A Summary Report by British Columbia s Provincial Health Officer June 2010 B.C. s Response to the H1N1 Pandemic 1 Table of Contents INTRODUCTION...........................................................................
More informationFORECASTING DEMAND OF INFLUENZA VACCINES AND TRANSPORTATION ANALYSIS.
FORECASTING DEMAND OF INFLUENZA VACCINES AND TRANSPORTATION ANALYSIS. GROUP MEMBER 1. HOLLY / NGHIEM NGUYET HUU RA6057117 2. YOSUA TJOKRO HINDRO / RA6057060 3. ADAM HUNG 洪一智 4. STAN LU 陸潤龍 RA7041193 CONTENTS
More informationMEMORANDUM. RE: Ontario Influenza and Respiratory Infection Surveillance Program
1 MEMORANDUM TO: Medical Officers of Health and Associate Medical Officers of Health Directors of Communicable Disease and Vaccine Preventable Disease Control Communicable Disease Managers RE: Ontario
More informationHealth Interventions in Ambulatory Cancer Care Centres DRAFT. Objectives. Methods
ENVIRONMENTAL SCAN Health Interventions in Ambulatory Cancer Care Centres Context Cancer, a complex, chronic condition, will affect an estimated two in five Canadians in their lifetime. 1 Cancer requires
More informationQuality & Safety Committee Date: 22 June 2016 Agenda item: 4.4
SUMMARY REPORT ABM University Health Board Quality & Safety Committee Date: 22 June 20 Agenda item: 4.4 Subject Prepared by Approved by Infection Prevention & Control Delyth Davies, Head of Nursing, Infection
More informationTiming of vaccination campaigns against pandemic influenza in a population dynamical model of Vancouver, Canada
Timing of vaccination campaigns against pandemic influenza in a population dynamical model of Vancouver, Canada Jessica M. Conway 1,2, Rafael Meza 2, Bahman Davoudi-Dehagi 2, Ashleigh Tuite 3, Babak Pourbohloul
More informationONTARIO S STRATEGY TO PREVENT OPIOID ADDICTION AND OVERDOSE. Dr. David Williams Chief Medical Officer of Health
ONTARIO S STRATEGY TO PREVENT OPIOID ADDICTION AND OVERDOSE Dr. David Williams Chief Medical Officer of Health National opioid-related mortality data, 2016 (Health Canada) Provincial Overdose Coordinator
More informationTarrant County Influenza Surveillance Weekly Report CDC Week 06: February 05 11, 2012
Tarrant County Public Health Division of Epidemiology and Health Information Tarrant County Influenza Surveillance Weekly Report CDC Week 06: February 05 11, 2012 Influenza Activity Code, County and State
More informationNew Brunswick Influenza Activity Summary Report: season (Data from August 30,2015 to June 4,2016)
New Brunswick Influenza ctivity Summary Report: - season (Data from ugust 30, to June 4,) Highlights of the - Influenza season: This season, we experienced later influenza activity than expected. This
More informationLow Influenza Activity
Manitoba Health, Seniors and Active Living (MHSAL) Influenza Surveillance Report `Week 2018 2019 53: Dec 28, 2014 Jan 3, 2015 Low Influenza Activity Week 40 41 (Sept. 30 Oct. 13, 2018) Data extracted Oct.
More informationOttawa Public Health Respiratory and Enteric Surveillance Report November 11-17, 2018 (Week 46)
Ottawa Public Health Respiratory and Enteric Surveillance Report November 11-17, 2018 (Week 46) This report provides a overview of the current Influenza season in the City of Ottawa, Ontario. For information
More information