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Volume 7, Number 4—August 2001
West Nile Virus
West Nile Virus

Serologic Evidence for West Nile Virus Infection in Birds in the New York City Vicinity During an Outbreak in 1999

Nicholas Komar*Comments to Author , Nicholas A. Panella*, Joseph E. Burns*, Stephen W. Dusza*, Tina M. Mascarenhas*, and Thomas O. Talbot†
Author affiliations: *Centers for Disease Control and Prevention, Fort Collins, Colorado, USA; †New York State Department of Health, Troy, New York, USA

Main Article

Table 4

Estimated relative abundance of six bird species with West Nile virus seroprevalence and estimated relative number of infections, suburban northeastern Queens

Bird Relative WN virus Ab Relative no. of
species abundance prevalence [95% CI] infections (%)a Percentage rangeb
House Sparrow 6,000 0.60 4186 82 – 97
[0.36-0.81] (92)
Rock Dove 1,000 0.27 314 3 – 16
[0.15-0.41] (7)
Mallard 60 0.06 4 <1 - <1
[0.002-0.35] (<1)
Canada Goose 60 0.29 20 <1 – 2
[0.04-0.71] (<1)
Domestic Chicken 3 0.63 2 <1 - <1
[0.55-0.71] (<1)
Domestic Goose 1 0.86 1 <1 - <1
[0.42-1.00] (<1)

Ab: antibody; CI: confidence interval.
aAdjusted relative to Domestic Goose.
bThis range is determined as follows for each species. For lower bound, the lowest bound of the seroprevalence CI is used to estimate the total relative number of infections; the upper bound of this CI is used for all other species. The converse is assumed for the calculation of the upper bound of the percentage.

Main Article

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Page updated: April 27, 2012
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