Role of corvids in epidemiology of west Nile virus in southern California

Journal of Medical Entomology
William K ReisenCynthia Jean

Abstract

The invasion of different southern California landscapes by West Nile virus (WNV) and its subsequent amplification to epidemic levels during 2004 enabled us to study the impact of differing corvid populations in three biomes: the hot Colorado desert with few corvids (Coachella Valley), the southern San Joaquin Valley (Kern County) with large western scrub-jay but small American crow populations, and the cool maritime coast (Los Angeles) with a large clustered American crow population. Similar surveillance programs in all three areas monitored infection rates in mosquitoes, seroconversion rates in sentinel chickens, seroprevalence in wild birds, numbers of dead birds reported by the public, and the occurrence of human cases. Infection rates in Culex tarsalis Coquillett and sentinel chicken seroconversion rates were statistically similar among all three areas, indicating that highly competent mosquito hosts were capable of maintaining enzootic WNV transmission among less competent and widely distributed avian hosts, most likely house sparrows and house finches. In contrast, infection rates in Culex pipiens quinquefasciatus Say were statistically higher in Kern and Los Angeles counties with elevated corvid populations than in Coac...Continue Reading

References

Nov 6, 2004·Virology·C Todd DavisAlan D T Barrett

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Citations

May 15, 2007·Theoretical Biology & Medical Modelling·Ivo M Foppa, Andrew Spielman
Oct 18, 2007·Journal of the American Mosquito Control Association·James A DennettRudy Bueno
Jan 8, 2009·Vector Borne and Zoonotic Diseases·William K ReisenStan Wright
Feb 6, 2010·The American Journal of Tropical Medicine and Hygiene·Maria A Diuk-WasserTheodore G Andreadis
May 5, 2010·The American Journal of Tropical Medicine and Hygiene·Valerie A O'BrienCharles R Brown
Aug 5, 2010·The American Journal of Tropical Medicine and Hygiene·Jennifer L KwanWilliam K Reisen
Nov 3, 2010·The American Journal of Tropical Medicine and Hygiene·Jennifer L KwanWilliam K Reisen
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Sep 7, 2013·Viruses·William K Reisen
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Jul 31, 2012·Emerging Infectious Diseases·Jennifer L KwanWilliam K Reisen

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