Arid
DOI10.1603/0022-2585(2008)45[494:PWNVTA]2.0.CO;2
Persistent West Nile virus transmission and the apparent displacement St. Louis encephalitis virus in southeastern California, 2003-2006
Reisen, William K.1; Lothrop, Hugh D.1; Wheeler, Sarah S.1; Kennsington, Marc1; Gutierrez, Arturo2; Fang, Ying1; Garcia, Sandra1; Lothrop, Branka2
通讯作者Reisen, William K.
来源期刊JOURNAL OF MEDICAL ENTOMOLOGY
ISSN0022-2585
EISSN1938-2928
出版年2008
卷号45期号:3页码:494-508
英文摘要

West Nile virus (family Flaviviridae, genus Flavivirus, WNV) invaded the Colorado Desert biome of southern California during summer 2003 and seemed to displace previously endemic St. Louis encephalitis virus (family Flaviviridae, genus Flavivirus, SLEV, an antigenically similar Flavivirus in the Japanese encephalitis virus serocomplex). Western equine encephalomyelitis virus (family Togaviridae, genus Alphavirus, WEEV), an antigenically distinct Alphavirus, was detected during 2005 and 2006, indicating that conditions were suitable for encephalitis virus introduction and detection. Cross-protective "avian herd immunity" due to WNV infection possibly may have prevented SLEV reintroduction and/or amplification to detectable levels. During 2003-2006, WNV was consistently active at wetlands and agricultural habitats surrounding the Salton Sea where Culex tarsalis Coquillett served as the primary enzootic maintenance and amplification vector. Based on published laboratory infection studies and the current seroprevalence estimates, house sparrows, house finches, and several Ardeidae may have been important avian amplifying hosts in this region. Transmission efficiency may have been dampened by high infection rates in incompetent avian hosts, including Gamble’s quail, mourning doves, common ground doves, and domestic pigeons. Early season WNV amplification and dispersal from North Shore in the southeastern portion of the Coachella Valley resulted in sporadic WNV incursions into the urbanized Upper Valley near Palm Springs, where Culex pipiens quinquefasciatus Say was the primary enzootic and bridge vector. Although relatively few human cases were detected during the 2003-2006 period, all were concentrated in the Upper Valley and were associated with high human population density and WNV infection in peridomestic populations of Cx. p. quinquefasciatus. Intensive early mosquito control during 2006 seemed to interrupt and delay transmission, perhaps setting the stage for the future reintroduction of SLEV.


英文关键词West Nile virus St. Louis encephalitis virus western equine encephalomyelitis virus Culex tarsalis Culex pipiens quinquefasciatus
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000257259500023
WOS关键词CULEX-TARSALIS DIPTERA ; COACHELLA-VALLEY ; EQUINE ENCEPHALOMYELITIS ; SOUTHERN CALIFORNIA ; HOUSE FINCHES ; EXPERIMENTAL-INFECTION ; LANDSCAPE ECOLOGY ; VECTOR COMPETENCE ; WILD BIRDS ; MOSQUITO
WOS类目Entomology ; Veterinary Sciences
WOS研究方向Entomology ; Veterinary Sciences
来源机构University of California, Davis
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/158322
作者单位1.Univ Calif Davis, Sch Vet Med, Ctr Vectorborne Dis, Arbovirus Res Unit, Davis, CA 95616 USA;
2.Coachella Vally Mosquito & Vector Control Dist, Indio, CA 92201 USA
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Reisen, William K.,Lothrop, Hugh D.,Wheeler, Sarah S.,et al. Persistent West Nile virus transmission and the apparent displacement St. Louis encephalitis virus in southeastern California, 2003-2006[J]. University of California, Davis,2008,45(3):494-508.
APA Reisen, William K..,Lothrop, Hugh D..,Wheeler, Sarah S..,Kennsington, Marc.,Gutierrez, Arturo.,...&Lothrop, Branka.(2008).Persistent West Nile virus transmission and the apparent displacement St. Louis encephalitis virus in southeastern California, 2003-2006.JOURNAL OF MEDICAL ENTOMOLOGY,45(3),494-508.
MLA Reisen, William K.,et al."Persistent West Nile virus transmission and the apparent displacement St. Louis encephalitis virus in southeastern California, 2003-2006".JOURNAL OF MEDICAL ENTOMOLOGY 45.3(2008):494-508.
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