City of Arlington West Nile Virus Response Plan 2013
WNV Presentation Overview Characteristics of the West Nile Virus The 2012 WNV Experience Arlington s Approach to WNV Control After Action Review of 2012 Response 2013 Response Plan based on 2012 AAR 2013 WNV Response Plan Timeline
How is West Nile Virus Spread? Mosquito then bite and infect humans, horses and other animals with WNV Bird has WNV Mosquito feeds on bird with WNV
2 Forms of West Nile Virus West Nile Fever About 20% of those infected will develop West Nile Fever with flu-like symptoms. Fever, Headache, Fatigue, Skin Rash, Eye Pain or Swollen Lymph Glands Majority of individuals (roughly 80%) who are bitten by an infected mosquito will show no symptoms. West Nile Fever symptoms may last two to three weeks with an uneventful recovery or the disease may lead to a severe disease in roughly less than 1% of infected individuals.
2 Forms of West Nile Virus West Nile Neuroinvasive (WNND) 1 in 150 of those infected with West Nile Fever develop into the more severe form of WNV, (Encephalitis, Meningitis, other ) WNND affects the brain and spinal cord and may lead to brain damage, coma and can be fatal. Individuals older than 50, when combined with an immune compromised system, are more likely to develop WNND.
City of Arlington 2012 WNV Experience Statistics County Deaths WNND WNF Total Tarrant 10 105 156 261 Dallas 18 182 218 400 Collin 4 22 36 58 Denton 2 53 128 181 Johnson 0 6 7 13 Ellis 2 9 17 26 State 82 816 976 1792 Arlington 1 27 36 64 COA About 24% of Tarrant County WNV Cases
2012 WNV Arlington Experience Statistics
The Arlington Approach
The Arlington Approach
Mosquito control is best performed using the Integrated Mosquito Management (IMM) concept. IMM develops pest management systems that are practical and effective to protect human health and the environment. Mosquito control can be divided into two areas of responsibility - individual and public. West Nile Virus Response Public Property Areas Private Property Areas
West Nile Virus Next Steps: After Action Review Identify areas for plan improvement Adjust existing plan based on AAR findings Augment response capability and capacity Implement revised plan
West Nile Virus Next Steps: Per AAR WNV Action Plan 2013 Meetings among COA Departments Clarified Operational Structure EOP/NIMS Defined areas of responsibility Plan preparation in February-April Mass WNV Communications - April Begin WNV Surveillance May 1 Implement WNV Operational Plan May to October
WNV 2013 Fire Department/ Office of Emergency Management: Issue/Plan Management Public Health Response Response Coordination among COA Departments and Partner agencies Monitoring, Documentation and Reporting Communications with Regional Partners Approval of Response Efforts and Community Communications Updates to CMO and City Council
WNV 2013 Fire Department/ Medical Operations: Field Operations Coordination and Communication Hospital Surveillance Coordination with AMR
WNV 2013 Community Development and Planning: Manage mosquito control contractor Mapping of WNV activity Coordination of Larvicide effort in public waterways (creek, streams, etc ) Spray management if necessary
WNV 2013 Public Health Authority: Coordination with TCPH Communications with CDC Communications with regional medical/public health partners
WNV 2013 Office of Communications: Public Education campaign with continuous information dissemination through: City s internet site City s intranet site Local Media (press releases, interviews and PSA s) Social Media West Nile Protection (4D s) information flyers Global Email to employees City television station
WNV 2013 COA AFD/OEM Fire Medical Operations Community Development and Planning Public Health Authority Office of Communications Field Operation Communications and Coordination Mosquito Control Contractor Coordination with TCPH Mass Communication Strategy Implementation Hospital Surveillance Mapping of WNV Activity Communications with CDC Media Coordination Coordination with AMR Larvicide Public Waterways Communications with regional medical partners
1. EDUCATION CITY OF ARLINGTON WEST NILE VIRUS City of Arlington RESPONSE PLAN MATRIX 2012 WNV Response Plan Public education as to how citizens can protect themselves through preventative efforts. City website, TV, flyers, FAQ sheet used by Action Center, presentations, message displayed on screen at Rangers Ball Park, Cowboys Stadium, etc 2. NOTIFICATION Public notification of human WNV cases in identified areas (1/2 mile radius of confirmed case(s). Efforts may consist door flyers containing WNV preventative information, direct communication to susceptible populations, community presentations).. 3. SURVEILLANCE AND LARVICIDE APPLICATION Trapping and testing of mosquitoes for WNV in areas of concern along with the application of larvicide where mosquito larva are present Consider the application of biological control measures 4. CONTROL MEASURE EVALUATION Follow up trapping and testing in identified areas of concern to determine control measure progress. o o o An identified cluster of human West Nile Virus cases Positive West Nile Virus mosquito sampling Concurrent larvicide treatment with limited effectiveness 5. TARGETED ADULTICIDE & CONTINUED LARVACIDE APPLICATION Targeted spraying and larvicide application in areas not sufficiently responding to larvicide application alone. o o Apply a focused and targeted effort for application of the mosquito control agent to where it is needed while limiting collateral impacts. Limit potential impacts of mosquito spraying on beneficial insects, fish, pets, and those who might be sensitive to the mosquito control agent. 6. CONTROL MEASURE EVALUATION Pre and post testing of treated areas to determine effectiveness of targeted mosquito control agents. (effective control rates) Continued mosquito surveillance of treated areas to determine any reemergence or resistance 7. EMERGENT WNV CASE RESPONSE Dependent of factors involved Dependent on presented situation
COA WNV Response Plan Public Awareness and Education Effort Surveillance of Confirmed Human West Nile Virus Cases Determined Areas of Concern
COA WNV Response Plan Mosquito Control Specialists Citizen Notification Sampling and Testing Remediation of issue areas
COA WNV Response Plan Larvicide Application Sampling and Testing Evaluation of Control Efforts Next Step Control Efforts Community Notification Targeted Spraying
WNV 2013 Timeline March 5: City of Arlington multi-discipline WNV Response Team meeting March 6: CD&P develops RFP for a mosquito control contractor March 28: Mosquito control contract proposals are due to city April 1: Mass Communication campaign begins (websites, social media, mass media) Mosquito control contractor selected April 15: WNV brochures placed in utility bills May 1: Selected vector control contractor begins active surveillance (mosquito trapping, testing and larviciding) May/Oct: Expected Operational Period
City of Arlington West Nile Virus Response Plan 2013 Questions?