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Volume 14, Number 5—May 2008
Research

Efficacy of Aerial Spraying of Mosquito Adulticide in Reducing Incidence of West Nile Virus, California, 2005

Ryan M. Carney*1Comments to Author , Stan Husted*, Cynthia Jean*, Carol A. Glaser*, and Vicki L. Kramer†
Author affiliations: *California Department of Public Health, Richmond, California, USA; †California Department of Public Health, Sacramento, California, USA;

Main Article

Table 1

Number of human cases of infection with West Nile virus by location and temporal classification, California, 2005*

Area† Total Pretreatment‡ Posttreatment§ Postincubation¶ Population#
Treated, northern 34 28 6 0 221,828
Treated, southern 21 20 1 0 338,579
Buffer, northern 13 9 4 3 94,399
Buffer, southern 8 5 3 1 50,127
Untreated 76 41 35 18 518,566
Sacramento County 152 103 49 22 1,223,499
California 670 357 313 197 32,648,149

*Only cases with known date of onset of illness and location information (i.e., Sacramento County at the address level and California at the county level) are included in the analysis.
†California excluding Sacramento County.
‡Refers to cases with onset of illness up to and including the last date that aerial adulticiding was conducted (ending 22 Aug for the southern treated area and southern buffer zone and 10 Aug for all other areas).
§Refers to cases with onset of illness after the last date that aerial adulticiding was conducted (beginning 23 Aug for the southern treated area and southern buffer zone and 11 Aug for all other areas).
¶Refers to cases with onset of illness >14 days after the first date that aerial adulticiding was conducted (beginning 4 Sep for the southern treated area and southern buffer zone and 23 Aug for all other areas).
#Population data source: UA Census 2000 TIGER/Line data made available in shapefile format through Environmental Systems Research Institute, Inc. (Redlands, CA, USA) (20).

Main Article

References
  1. Hayes  EB, Sejvar  JJ, Saki  SR, Lanciotti  RS, Bode  AV, Campbell  GL. Virology, pathology, and clinical manifestations of West Nile virus disease. Emerg Infect Dis. 2005;11:1174–9.PubMedGoogle Scholar
  2. California Department of Health Services. Vector-Borne Disease Section. Vector-borne diseases in California, 2003: annual report. Sacramento (CA): The Department; 2004 Aug [cited 2007 Jul 25]. Available from http://www.dhs.ca.gov/PS/dcdc/disb/pdf/Vector-Borne%20Diseases%20in%20California,%20Annual%20Report%202003.pdf
  3. California Department of Health Services. Vector-Borne Disease Section. Vector-borne diseases in California, 2004: annual report. Sacramento (CA): The Department; 2005 Aug [cited 2007 Jul 25]. Available from http://www.dhs.ca.gov/dcdc/disb/pdf/2004%20VBDS%20Annual%20Report%20final.pdf
  4. California Department of Health Services. California’s human West Nile virus (WNV) cases, 2004. Updated 2007 Feb 9. Sacramento (CA): The Department; 2005 [cited 2007 Mar 19]. Available from http://westnile.ca.gov/website/maps_data/2004_maps_data/humsum.pdf
  5. California Department of Health Services. Human West Nile virus (WNV) cases in California, 2005. Updated 2006 Mar 30. Sacramento (CA): The Department; 2006 [cited 2007 Mar 21]. Available from http://westnile.ca.gov/website/maps_data/2005_maps_data/2005%20Human%20WNV%20Case%20Linelist.pdf
  6. Centers for Disease Control and Prevention. West Nile virus activity in the United States. Updated 2007 Feb 23.Atlanta: The Centers; 2006 [cited 2007 Apr 11]. Available from http://www.cdc.gov/ncidod/dvbid/westnile/surv&controlCaseCount05_detailed.htm
  7. US Geological Survey. West Nile virus, human, 2005. Updated 2007 May 1. Reston (VA): The Survey; 2006 [cited 2007 Mar 2]. Available from http://diseasemaps.usgs.gov/2005/wnv/wnv_us_human.html
  8. Elnaiem  DA, Kelley  K, Wright  S, Laffey  R, Yoshimura  G, Reed  M, Impact of aerial spraying of pyrethrin insecticide on Culex pipiens and Culex tarsalis (Diptera: Culicidae) abundance and West Nile virus infection rates in an urban/suburban area of Sacramento County, California. J Med Entomol. In press.
  9. Nielsen  CF, Armijos  MV, Wheeler  S, Carpenter  TE, Boyce  WM, Kelley  K, Risk factors associated with human infection during the 2006 West Nile virus outbreak in Davis, a residential community in northern California. Am J Trop Med Hyg. 2008;78:53–62.PubMedGoogle Scholar
  10. Elnaiem  DA, Kelley  K, Wright  S, Laffey  R, Yoshimura  G, Armijos  V, Epidemic amplification of West Nile virus in Sacramento and Yolo counties, June–September 2005. Proceedings of the California Mosquito Vector Control Association. 2006;74:18–20.
  11. Boyce  K. Mosquito and mosquito-borne disease management plan. Elk Grove (CA): Sacramento-Yolo Mosquito and Vector Control District. 2005 [cited 2007 Jul 25]. Available from http://www.fightthebite.net/download/Mosquito_Management_Plan.pdf
  12. California Department of Health Services. Mosquito and Vector Control Association of California; University of California. California Mosquito-borne Virus Surveillance and Response Plan. Sacramento (CA): The Department. Vector-Borne Disease Section. 2005 Jun [cited 2007 Mar 21]. Available from http://westnile.ca.gov/website/publications/2005_ca_mosq_response_plan.pdf
  13. Barker  CM, Reisen  WK, Kramer  VL. California State Mosquito-borne Virus Surveillance and Response Plan: a retrospective evaluation using conditional simulations. Am J Trop Med Hyg. 2003;68:508–18.PubMedGoogle Scholar
  14. Weston  DP, Amweg  EL, Mekebri  A, Ogle  RS, Lydy  MJ. Aquatic effects of aerial spraying for mosquito control over an urban area. Environ Sci Technol. 2006;40:5817–22. DOIPubMedGoogle Scholar
  15. Herms  WB. Medical entomology, with special reference to the health and well-being of man and animals. 4th ed. New York: Macmillan; 1950.
  16. Hopkins  CC, Hollinger  FB, Johnson  RF, Dewlett  HJ, Newhouse  VF, Chamberlain  RW. The epidemiology of St. Louis encephalitis in Dallas, Texas, 1966. Am J Epidemiol. 1975;102:1–15.PubMedGoogle Scholar
  17. Palmisano  CT, Taylor  V, Caillouet  K, Byrd  B, Wesson  DM. Impact of West Nile virus outbreak upon St. Tammany Parish mosquito abatement district. J Am Mosq Control Assoc. 2005;21:33–8. DOIPubMedGoogle Scholar
  18. Williams  KH, Hollinger  FB, Metzger  WR, Hopkins  CC, Chamberlain  RW. The epidemiology of St. Louis encephalitis in Corpus Christi, Texas, 1966. Am J Epidemiol. 1975;102:16–24.PubMedGoogle Scholar
  19. Hayes  RO, Holden  P, Mitchell  CJ. Effects of ultra-low volume applications of malathion in Hale County, Texas. IV. Arbovirus studies. J Med Entomol. 1971;8:183–8.PubMedGoogle Scholar
  20. US Census Bureau. UA Census 2000 TIGER/Line Files. Redlands (CA): Environmental Systems Research Institute, Inc.; 2007 [cited 2007 Aug 9]. Available from http://arcdata.esri.com/data/tiger2000/tiger_download.cfm
  21. Miller  CL. Census 2000 TIGER/line files technical documentation. Washington: US Census Bureau; 2002 [cited 2007 Aug 9]. Available from http://www.census.gov/geo/www/tiger/tigerua/ua2ktgr.pdf
  22. Petersen  LR, Marfin  AA. West Nile virus: a primer for the clinician. Ann Intern Med. 2002;137:173–9.PubMedGoogle Scholar
  23. Centers for Disease Control and Prevention. West Nile virus: clinical description. 2004 Sep 29 [cited 2007 Mar 16]. Available from http://www.cdc.gov/ncidod/dvbid/westnile/clinicians/pdf/wnv-clinicaldescription.pdf
  24. Szklo  M, Nieto  FJ. Epidemiology: beyond the basics. 2nd ed. Sudbury (MA): Jones and Bartlett; 2007.
  25. Ruiz  MO, Tedesco  C, McTighe  TJ, Austin  C, Kitron  U. Environmental and social determinants of human risk during a West Nile virus outbreak in the greater Chicago area, 2002. Int J Health Geogr. 2004;3:8. DOIPubMedGoogle Scholar
  26. Gaulin  C, Couillard  M, Pilon  PA, Tremblay  M, Lambert  L, Fradet  MD, Assessment of surveillance of human West Nile virus infection in Quebec, 2003. Can Commun Dis Rep. 2004;30:97–104.PubMedGoogle Scholar
  27. Theophilides  CN, Ahearn  SC, Grady  S, Merlino  M. Identifying West Nile virus risk areas: the dynamic continuous-area space-time system. Am J Epidemiol. 2003;157:843–54. DOIPubMedGoogle Scholar
  28. Theophilides  CN, Ahearn  SC, Binkowski  ES, Paul  WS, Gibs  K. First evidence of West Nile virus amplification and relationship to human infections. Int J Geogr Inf Sci. 2006;20:103–15. DOIGoogle Scholar
  29. Warner  RD, Kimbrough  RC, Alexander  JL, Rush Pierce  J Jr, Ward  T, Martinelli  LP. Human West Nile virus neuroinvasive disease in Texas, 2003 epidemic: regional differences. Ann Epidemiol. 2006;16:749–55. DOIPubMedGoogle Scholar
  30. Watson  JT, Jones  RC, Gibbs  K, Paul  W. Dead crow reports and location of human West Nile virus cases, Chicago, 2002. Emerg Infect Dis. 2004;10:938–40.PubMedGoogle Scholar
  31. Mostashari  F, Bunning  ML, Kitsutani  PT, Singer  DA, Nash  D, Cooper  MJ, Epidemic West Nile encephalitis, New York, 1999: results of a household-based seroepidemiological survey. Lancet. 2001;358:261–4. DOIPubMedGoogle Scholar
  32. Dow  RP, Reeves  WC, Bellamy  RE. Dispersal of female Culex tarsalis into a larvicided area. Am J Trop Med Hyg. 1965;14:656–70.
  33. Mitchell  CJ, Kilpatrick  JW, Hayes  RO, Curry  HW. Effects of ultra-low volume applications of malathion in Hale County, Texas. II. Mosquito populations in treated and untreated areas. J Med Entomol. 1970;7:85–91.PubMedGoogle Scholar
  34. Mitchell  CJ, Hayes  RO, Holden  P, Hill  HR, Hughes  TB Jr. Effects of ultra-low volume applications of malathion in Hale County, Texas. I. Western encephalitis virus activity in treated and untreated towns. J Med Entomol. 1969;6:155–62.PubMedGoogle Scholar
  35. Reisen  WK, Milby  MM, Meyer  RP. Population dynamics of adult Culex mosquitoes (Diptera: Culicidae) along the Kern River, Kern County, California, in 1990. J Med Entomol. 1992;29:531–43.PubMedGoogle Scholar
  36. Centers for Disease Control and Prevention. Epidemic/epizootic West Nile virus in the United States: guidelines for surveillance, prevention, and control. Fort Collins (CO): The Centers; 2003 [cited 2007 Mar 19]. Available from http://www.cdc.gov/ncidod/dvbid/westnile/resources/wnvguidelines2003.pdf
  37. Marfin  AA, Petersen  LR, Eidson  M, Miller  J, Hadler  J, Farello  C, Widespread West Nile virus activity, eastern United States, 2000. Emerg Infect Dis. 2001;7:730–5.PubMedGoogle Scholar
  38. Centers for Disease Control and Prevention. West Nile virus activity—United States, January 1–December 1, 2005. MMWR Morb Mortal Wkly Rep. 2005;54:1253–6.PubMedGoogle Scholar

Main Article

1Current affiliation: Yale University School of Medicine, New Haven, Connecticut, USA

Page created: July 08, 2010
Page updated: July 08, 2010
Page reviewed: July 08, 2010
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