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Volume 10, Number 12—December 2004
Dispatch

West Nile Virus Viremia in Wild Rock Pigeons

Andrew B. Allison*Comments to Author , Daniel G. Mead*, Samantha E. J. Gibbs*, Douglas M. Hoffman†, and David E. Stallknecht*
Author affiliations: *University of Georgia, Athens, Georgia, USA; †United States Department of Agriculture–Wildlife Services, Athens, Georgia, USA

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Table 1

Flavivirus seroprevalence rates in free-ranging rock pigeons from northwest rail yard, Fulton County, Georgia, 2002–2003a

Collection date No. tested n (%) WNV+ [95% CI] n (%) SLEV+ 
[95% CI] n (%) FLAVI+ 
[95% CI] n (%) viremic 
[95% CI]
2002
Feb 28 56 25 (44.6) [32.4–57.6] 0 2 (3.6) [1.0–12.1] NT
Mar 6–7 107 35 (32.7) [24.6–42.1] 0 1 (0.9) [0.2–5.1] NT
Aug 15 58 9 (15.5) [8.4–26.9] 0 0 0
Aug 22 68 13 (19.1) [11.5–30.0] 0 0 7 (10.3) [5.1–19.8]
Total 289 82 (28.4) [23.5–33.8] 0 3 (1.0) [0.4–3.0] 7/126 (5.6) [2.7–11.0]
2003
Apr 16 34 17 (50) [34.1–65.9] 0 0 NT
Apr 29 33 9 (27.3) [15.1–44.2] 0 0 NT
Jul 30 71 8 (11.3) [5.8–20.7] 0 0 2 (2.8) [0.8–9.7]
Sep 5 72 12 (16.7) [9.8–26.9] 1 (1.4) [0.3–7.4] 1 (1.4) [0.3–7.4] 2 (2.8) [0.8–9.6]
Total 210 46 (21.9) [16.8–28.0] 1 (0.5) [0.1–2.7] 1 (0.5) [0.1–2.7] 4/143 (2.8) [1.1–7.0]

aWNV, West Nile virus; SLEV, St. Louis encephalitis virus; FLAVI, flavivirus; WNV+, samples in which a fourfold difference in WNV antibody titer over SLEV could be demonstrated; SLEV+, samples in which a fourfold difference in SLEV antibody titer over WNV could be demonstrated; FLAVI+, samples in which a fourfold difference in titer between WNV and SLEV could not be demonstrated and therefore classified as flavivirus positive; CI, confidence interval; NT, not tested for viremia.

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Page created: April 14, 2011
Page updated: April 14, 2011
Page reviewed: April 14, 2011
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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