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160. EARLY IMPACT OF WEST NILE VIRUS ON THE YELLOW-BILLED MAGPIE(PICA NUTTALLI)

Author

CROSBIE, SCOTT P., primary, KOENIG, WALTER D., additional, REISEN, WILLIAM K., additional, KRAMER, VICKI L., additional, MARCUS, LAUREN, additional, CARNEY, RYAN, additional, PANDOLFINO, EDWARD, additional, BOLEN, GINGER M., additional, CROSBIE, LIZETTE R., additional, BELL, DOUGLAS A., additional, and ERNEST, HOLLY B., additional

Published
2008
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161. Impact of Aerial Spraying of Pyrethrin Insecticide onCulex pipiensandCulex tarsalis(Diptera: Culicidae) Abundance and West Nile Virus Infection Rates in an Urban/Suburban Area of Sacramento County, California

Author

Elnaiem, Dia-Eldin A., primary, Kelley, Kara, additional, Wright, Stan, additional, Laffey, Rhonda, additional, Yoshimura, Glenn, additional, Reed, Marcia, additional, Goodman, Gary, additional, Thiemann, Tara, additional, Reimer, Lisa, additional, Reisen, William K., additional, and Brown, David, additional

Published
2008
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162. 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

Author

Elnaiem, Dia-Eldin A., primary, Kelley, Kara, additional, Wright, Stan, additional, Laffey, Rhonda, additional, Yoshimura, Glenn, additional, Reed, Marcia, additional, Goodman, Gary, additional, Thiemann, Tara, additional, Reimer, Lisa, additional, Reisen, William K., additional, and Brown, David, additional

Published
2008
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180. Comparison of the Efficiency and Cost of West Nile Virus Surveillance Methods in California.

Author

Healy, Jessica M., Reisen, William K., Kramer, Vicki L., Fischer, Marc, Lindsey, Nicole P., Nasci, Roger S., Macedo, Paula A., White, Gregory, Takahashi, Richard, Khang, La, and Barker, Christopher M.

Subjects
*WEST Nile fever transmission, *PUBLIC health surveillance, *WEST Nile fever prevention, *MOSQUITO vectors, *PREVENTIVE medicine, *EPIDEMIOLOGY, *ECONOMICS
Abstract

Surveillance systems for West Nile virus (WNV) combine several methods to determine the location and timing of viral amplification. The value of each surveillance method must be measured against its efficiency and costs to optimize integrated vector management and suppress WNV transmission to the human population. Here we extend previous comparisons of WNV surveillance methods by equitably comparing the most common methods after standardization on the basis of spatial sampling density and costs, and by estimating optimal levels of sampling effort for mosquito traps and sentinel chicken flocks. In general, testing for evidence of viral RNA in mosquitoes and public-reported dead birds resulted in detection of WNV approximately 2-5 weeks earlier than serological monitoring of sentinel chickens at equal spatial sampling density. For a fixed cost, testing of dead birds reported by the public was found to be the most cost effective of the methods, yielding the highest number of positive results per $1000. Increased spatial density of mosquito trapping was associated with more precise estimates of WNV infection prevalence in mosquitoes. Our findings also suggested that the most common chicken flock size of 10 birds could be reduced to six to seven without substantial reductions in timeliness or sensitivity. We conclude that a surveillance system that uses the testing of dead birds reported by the public complemented by strategically timed mosquito and chicken sampling as agency resources allow would detect viral activity efficiently in terms of effort and costs, so long as susceptible bird species that experience a high mortality rate from infection with WNV, such as corvids, are present in the area. [ABSTRACT FROM AUTHOR]

Published
2015
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187. Role of Corvids in Epidemiology of West Nile Virus in Southern California

Author

Reisen, William K., primary, Barker, Christopher M., additional, Carney, Ryan, additional, Lothrop, Hugh D., additional, Wheeler, Sarah S., additional, Wilson, Jennifer L., additional, Madon, Minoo B., additional, Takahashi, Richard, additional, Carroll, Brian, additional, Garcia, Sandra, additional, Fang, Ying, additional, Shafii, Marzieh, additional, Kahl, Nicole, additional, Ashtari, Siranoosh, additional, Kramer, Vicki, additional, Glaser, Carol, additional, and Jean, Cynthia, additional

Published
2006
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188. Overwintering of West Nile Virus in Southern California

Author

Reisen, William K., primary, Fang, Ying, additional, Lothrop, Hugh D., additional, Martinez, Vincent M., additional, Wilson, Jennifer, additional, O’Connor, Paul, additional, Carney, Ryan, additional, Cahoon-Young, Barbara, additional, Shafii, Marzieh, additional, and Brault, Aaron C., additional

Published
2006
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191. Human Health.

Author

Brown, Heidi E., Comrie, Andrew C., Drechsler, Deborah M., Barker, Christopher M., Basu, Rupa, Brown, Timothy, Gershunov, Alexander, Kilpatrick, A. Marm, Reisen, William K., Ruddell, Darren M., and English, Paul B.

Published
2013
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196. West Nile Virus in California

Author

Reisen, William, primary, Lothrop, Hugh, additional, Chiles, Robert, additional, Madon, Minoo, additional, Cossen, Cynthia, additional, Woods, Leslie, additional, Husted, Stan, additional, Kramer, Vicki, additional, and Edman, John, additional

Published
2004
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