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. 2004 May;10(5):938-40.
doi: 10.3201/eid1005.030603.

Dead crow reports and location of human West Nile virus cases, Chicago, 2002

John T Watson  1 , Roderick C Jones, Kevin Gibbs, William Paul
Affiliations

Dead crow reports and location of human West Nile virus cases, Chicago, 2002

John T Watson et al. Emerg Infect Dis. 2004 May.

Abstract

During the summer and fall of 2002, an epidemic (223 cases) and epizootic of West Nile virus infections occurred in Chicago. Retrospective spatial analysis demonstrated that age-adjusted human case rates were three times higher inside geographic areas with high early-season crow deaths than outside these areas.

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Figures

Figure 1
Figure 1
Dead crow sightings reported to the Chicago nonemergency hotline, by week of report, and human cases of West Nile virus infection, by week of illness onset, Chicago, June 16 (beginning of week 25) through October 12 (end of week 41), 2002. HCMA, high crow-mortality area.
Figure 2
Figure 2
Chicago map with high crow-mortality areas (HCMAs) and reported residences of A) West Nile virus (WNV)-infected case-patients, or B) WNV meningoencephalitis case-patients (WNV fever cases excluded), 2002.
See this image and copyright information in PMC

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