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CDR K.J. Stein & CDR D.M. Claborn steinkj@earthlink DVECC JAX Jacksonville, FL

Surveillance and Control Procedures for West Nile Virus Vectors Near Naval Installations in the Eastern United States. CDR K.J. Stein & CDR D.M. Claborn steinkj@earthlink.net DVECC JAX Jacksonville, FL February 10, 2004. Objectives.

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CDR K.J. Stein & CDR D.M. Claborn steinkj@earthlink DVECC JAX Jacksonville, FL

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  1. Surveillance and Control Procedures for West Nile Virus Vectors Near Naval Installations in the Eastern United States CDR K.J. Stein&CDR D.M. Clabornsteinkj@earthlink.net DVECC JAX Jacksonville, FL February 10, 2004

  2. Objectives • Develop local WNV surveillance and control that mirrors regional programs • To incorporate survey data into NDVECC JAX surveillance and control plan • To extend our knowledge with regard to mosquito IPM/abatement programs

  3. Navy Installations in NDVECC JAX AOR 1. NAS Jacksonville, FL 2. NAVSTA Mayport, FL 3. NAS New Orleans, LA 4. NSA New Orleans, LA 5. NCBC Gulfport, LA 6. NAS Meridian, MS 7. NAVSTA Pascagoula, MS 8. MCAS Cherry Point, NC 9. MCB Camp Lejeune, NC 10. NSY Portsmouth, NH 11. AEGIS CSEDS Moorestown, NJ 12. NAWC Lakehurst, NJ 13. NAS Willow Grove, PA 14. NAVSSES Philadelphia, PA 15. NSA Mechanicsburg, PA 16. NSF Philadelphia, PA 17. NAVSTA Newport, RI 18. NETC Newport, RI 19. NSA MIDSOUTH Memphis, TN 20. AMPHIB Little Creek, VA 21. FCTCLANT Dam Neck, VA 22. NAS Oceana, VA 23. NAVBASE Norfolk, VA 24. NH Portsmouth, VA 25. NSGA NWEST Chesapeake, VA 26. NSY Portsmouth, VA 27. NWS Yorktown, Norfolk, VA

  4. Northeast, Mid-Atlantic, and Midwest

  5. Mid-Atlantic, South, and Southeast

  6. Survey—Response Plans • 44% exceeded response plan criteria • 40% matched response plan criteria • 8% followed CDC guidance • One state did not have a response plan • One state contracted its response plan

  7. Survey—Adult Surveillance • 68-76% - CDC miniatures baited w/CO2 and CDC gravid traps • 44% - New Jersey traps • 32% - Fay-Prince traps • 8% - EVS • 4% - Mosquito Magnet

  8. Survey—Adult Decision-Making • 52% landing rates or trap thresholds, or both • 24% positive pools • 12% did not use positive pools • 12% did not survey

  9. Survey—Larval Thresholds • 24% - larval data--no uniformity among thresholds • 16% - larval presence • 44% - historical databases and abiotic variables • 12% - no larval surveillance

  10. Survey—Decision-Making • 92% - dead bird data in their programs • 8% - discontinued mosquito testing rely on dead birds • 72% - nuisance complaints • 28% - sentinel chickens, some discontinued • 64% - human serosurvey data • 36% - discontinued human serosurveys

  11. Survey—Adult Control • 11 permethrin • 9 sumithrin • 6 resmethrin • 5 malathion • 5 naled • 3 pyrethrin • 1 fenthion • 4 no insecticide use

  12. Adulticides (%)

  13. Survey Highlights— Larval Control • BTI and methoprene - 20 and 13,respectively (granules and dunks) • B. sphaericus - 9 • Temephos - 4 • Oils - 7 • Monomolecular films - 3 • Gambusia - 2 • No larval control but source reduction - 2

  14. Larvicides (%)

  15. Survey Highlights— Management • 60% - GIS for mapping birds, mosquito traps, and directing aerial spray programs • 32% - did not use GIS • 8% - recently acquired GIS

  16. Survey Highlights— Management • 84% conducted source reduction: ditching, dredging, removing standing water, channelizing swamps, and shredding of used tires • 88% relied on public awareness campaigns: community meetings, press releases, radio and TV public service announcements, brochures, and LISTSERVS • 8% complained of environmental regulations that interfered with mosquito management

  17. Survey Highlights— Management • 1 - Public awareness was major part of IPM • 1 - Did not use public awareness • 1 - NJ light traps to homeowners • 1 - Gambusia to stock in ponds

  18. Survey—Mosquitoes

  19. Conclusion • More resources directed towards adults than larvae • Three respondents dropping mosquito surveillance and relying on dead birds • Dead birds and human serology data • Adults - synthetic pyrethroids replacing organophosphates • Larvae - microbials and IGRs most popular

  20. Conclusion • If WNV is a surrogate for other emerging diseases, we must ensure that current efforts are effective, • Conserve techniques that have worked in the past • Additional studies that involve feedback and focus on the quantitative aspects of mosquito surveillance and control through time

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