RESPIRATORY VIRUS SURVEILLANCE REPORT

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1 RESPIRATORY VIRUS SURVEILLANCE REPORT Week Ending January 20, 2018 Wisconsin Department of Health Services Division of Public Health Bureau of Communicable Diseases Communicable Diseases Epidemiology Section

2 WISCONSIN DIVISION OF PUBLIC HEALTH RESPIRATORY VIRUS SURVEILLANCE REPORT WEEK ENDING January 20, 2018 INFLUENZA LIKE ILLNESS (ILI) ACTIVITY REGION V OF US (WI, MN, IL, MI, OH, IN) STATE OF WISCONSIN ILI: HIGH LEVELS ILI: MODERATE LEVELS UNITED STATES ILI: BELOW BASELINE ILI: INSUFFICIENT DATA AT-A-GLANCE: INFLUENZA-ASSOCIATED Weekly Respiratory Report Description PEDIATRIC DEATHS REPORTED: Predominant Virus of the Week: Week 3 (2018) October 1, 2017 to present Wisconsin 0 0 Nationwide 7 37 Influenza A/H3N2 CURRENT ALERTS: Influenza activity continues to increase statewide. 646 flu-associated hospitalizations were reported this week. RSV activity continues to be high statewide. For National US influenza surveillance statistics visit: Page 2

3 Number of positive detections % Positive by PCR WISCONSIN LABORATORY SURVEILLANCE FOR RESPIRATORY VIRUSES BY PCR Wisconsin positive influenza results and subtypes by PCR A (unknown subtype) A (H3N2 seasonal) A (H1N1) A (H3N2v) 2,000 B (unknown subtype) B (Victoria) B (Yamagata) Influenza % positive 6 1,600 1, /2 9/30 10/28 11/25 12/23 1/20 2/17 3/17 4/14 5/12 6/9 7/7 8/4 9/1 9/29 Cumulative number of positive influenza PCR tests by subtype September 3, 2017 to present Influenza A: 94% Influenza B: 6% A (2009 H1N1) A (H3N2) A (Unknown) B (Victoria) B (Yamagata) B (Unknown) Total positive (n) % of total positive 1% 16% 77% 1% 10 Total Page 3

4 % Positive by PCR (3-week moving average) WISCONSIN LABORATORY SURVEILLANCE FOR RESPIRATORY VIRUSES BY PCR Trends in respiratory virus activity by PCR on January 20, 2018 Influenza RSV hmpv - - Rhino-Entero Adenovirus Parainfluenza - - Coronavirus Respiratory virus Positive (n) Positive (%) Influenza A Influenza B H3N H1N1 Unknown Victoria Yamagata Unknown Influenza % Respiratory virus Positive (n) Positive (%) Parainfluenza 1 Parainfluenza 2 Parainfluenza 3 Parainfluenza 4 Parainfluenza % Respiratory virus Positive (n) Positive (%) CoV 229E CoV OC43 CoV NL63 CoV HKU1 Coronavirus (CoV) % Respiratory virus Positive (n) Positive (%) RSV % Human metapneumovirus % Rhino-enterovirus % Adenovirus % Page 4

5 % Positive by antigen detection Average % ILI WISCONSIN STATE SUMMARY Influenza rapid antigen tests RSV rapid antigen tests Influenza-like illness (ILI) Positive (n) Influenza A Influenza B Total % Positive Positive (n) % Positive ILI % Baseline Threshold % % 4.4% 2.4% 3.6% ILI activity trend analysis 8% 7% Average % ILI Baseline Threshold 3 per. Mov. Avg. (Average % ILI) 6% 4% 3% 2% 1% Influenza and RSV trend analysis RSV Influenza 3 per. Mov. Avg. (RSV) 3 per. Mov. Avg. (Influenza) Page 5

6 Influenza-associated hospitalizations, cumulative (n) Average % ILI (3-week moving average) WISCONSIN STATE SUMMARY ILI activity trend analysis by influenza season, Wisconsin 7% 6% 4% 3% 2% 1% Influenza season week Influenza-associated hospitalizations, Wisconsin Electronic Disease Surveillance System September 1, 2017 to present Total Influenza subtype Required Age group Admitted Postpartum reported A (2009 A A Not mechanical Pregnant (years) B to ICU ( 6 weeks) (n) H1N1) (H3N2) (Unknown) reported ventilation < Total Reported cumulative influenza-associated hospitalizations by influenza season, Wisconsin Influenza season week Page 6

7 % Positive by antigen detection Average % ILI NORTHEASTERN REGION Influenza rapid antigen tests RSV rapid antigen tests Influenza-like illness (ILI) Positive (n) % Positive Positive (n) % Positive ILI % Baseline Threshold Influenza A Influenza B Total % % 4. ILI activity trend analysis 8% 7% Average % ILI Baseline Threshold 3 per. Mov. Avg. (Average % ILI) 6% 4% 3% 2% 1% Influenza and RSV trend analysis RSV Influenza 3 per. Mov. Avg. (RSV) 3 per. Mov. Avg. (Influenza) Page 7

8 % Positive by antigen detection Average % ILI NORTHWESTERN REGION Influenza rapid antigen tests RSV rapid antigen tests Influenza-like illness (ILI) Positive (n) Influenza A Influenza B Total % Positive Positive (n) % Positive ILI % Baseline Threshold % % % 3.2% ILI activity trend analysis 8% 7% Average % ILI Baseline Threshold 3 per. Mov. Avg. (Average % ILI) 6% 4% 3% 2% 1% Influenza and RSV trend analysis RSV Influenza 3 per. Mov. Avg. (RSV) 3 per. Mov. Avg. (Influenza) Page 8

9 % Positive by antigen detection Average % ILI SOUTHEASTERN REGION Influenza rapid antigen tests RSV rapid antigen tests Influenza-like illness (ILI) Positive (n) Influenza A Influenza B Total % Positive Positive (n) % Positive ILI % Baseline Threshold % % 5.4% 3.9% 6.1% ILI activity trend analysis 8% 7% Average % ILI Baseline Threshold 3 per. Mov. Avg. (Average % ILI) 6% 4% 3% 2% 1% Influenza and RSV trend analysis RSV Influenza 3 per. Mov. Avg. (RSV) 3 per. Mov. Avg. (Influenza) Page 9

10 % Positive by antigen detection Average % ILI SOUTHERN REGION Influenza rapid antigen tests RSV rapid antigen tests Influenza-like illness (ILI) Positive (n) Influenza A Influenza B Total % Positive Positive (n) % Positive ILI % Baseline Threshold % % 2.1% 2.1% 3.2% ILI activity trend analysis 8% 7% Average % ILI Baseline Threshold 3 per. Mov. Avg. (Average % ILI) 6% 4% 3% 2% 1% Influenza and RSV trend analysis RSV Influenza 3 per. Mov. Avg. (RSV) 3 per. Mov. Avg. (Influenza) Page 10

11 Percent Vaccinated SEASONAL INFLUENZA VACCINATION Cumulative percentage of Wisconsin residents who received 1 or more doses of influenza vaccine, influenza season Healthy People 2020 Goal: Total Vaccinated: 3 This season so far: 32.36% Last season, by this week, 32.5 of the WI population was vaccinated against Influenza. 1 Data source: All influenza vaccination rates presented were calculated using data from the Wisconsin Immunization Registry (numerator) and Wisconsin population estimates (denominator). Influenza vaccine composition : The trivalent vaccines for use in the influenza season contain the following: A/Michigan/45/2015 (H1N1)pdm09-like virus A/Hong Kong/4801/2014 (H3N2)-like virus B/Brisbane/60/2008-like virus (B/Victoria lineage) It is recommended that quadrivalent vaccines containing two influenza B viruses contain the above three viruses and: B/Phuket/3073/2013-like virus (B/Yamagata lineage) Page 11

12 Race Ethnicity Percent of residents vaccinated SEASONAL INFLUENZA VACCINATION Percentage of Wisconsin residents who received one or more doses of influenza vaccine, by age group and influenza season Each season includes doses administered during the same time period (August 1 through May 3). Age group Percentage of Wisconsin residents who received one or more doses of influenza vaccine, by race and ethnicity and region, influenza season Non-Hispanic Hispanic White Wisconsin Northeastern Southeastern Southern Western Northern Black Asian American Indian Percent of residents vaccinated Page 12

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