What question did this study set out to answer?

To examine mosquito abundance, viral overwintering, and potential south-to-north corridor dissemination of western equine encephalomyelitis and St. Louis encephalitis viruses.

May 1, 1992Journal of Medical Entomology

Mosquito and Arbovirus Ecology in Southeastern California, 1986–1990

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Authors

WRWilliam K. ReisenUniversity of California, Davis JHJames L. HardyNortonLifeLock (United States)SPS. B. PresserUniversity of California, Berkeley

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Implication

Surveillance study reveals temperature-dependent arbovirus activity in Culex tarsalis mosquitoes, indicating localized transmission rather than south-to-north dissemination.

Key Points

To examine mosquito abundance, viral overwintering, and potential south-to-north corridor dissemination of western equine encephalomyelitis and St. Louis encephalitis viruses.
Monitored mosquito abundance using carbon dioxide traps across five valleys in southeastern California from June 1986 through April 1990.
Assessed arboviral infection rates in trapped mosquito pools and monitored viral transmission via seroconversions in sentinel chicken flocks.
Culex tarsalis was the predominant species collected and the sole species repeatedly infected with western equine encephalomyelitis (WEE) and St. Louis encephalitis (SLE) viruses.
Culex tarsalis population abundance peaked bimodally in April–May and August–October at mean temperatures of 25°C, while virus infections peaked later at temperatures exceeding 29°C.
Spring mosquito surges began earlier in southern valleys, but viral activity onset was inconsistent among valleys and did not demonstrate south-to-north geographical dissemination.

Cite This Study

Reisen et al. (1992) studied this question.

synapsesocial.com/papers/69d821d4f4e559c61eae2a07 https://doi.org/10.1093/jmedent/29.3.512

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Implication

Surveillance study reveals temperature-dependent arbovirus activity in Culex tarsalis mosquitoes, indicating localized transmission rather than south-to-north dissemination.

Mosquito and Arbovirus Ecology in Southeastern California, 1986–1990

Discussion

Member takes

Implication

Key Points

Cite This Study

Mosquito and Arbovirus Ecology in Southeastern California, 1986–1990

Discussion

Member takes

Implication

Key Points

Cite This Study

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Also Consider