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Short report: Changes in West Nile virus seroprevalence and antibody titers among Wisconsin mesopredators 2003-2006

American Journal of Tropical Medicine and Hygiene

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, , , , , , and

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Abstract

After the 2001 occurrence of West Nile virus (WNV) in Wisconsin (WI), we collected sera, during 2003-2006, from south-central WI mesopredators. We tested these sera to determine WNV antibody prevalence and geometric mean antibody titer (GMAT). Four-fold higher antibody prevalence and 2-fold higher GMAT in 2003-2004 indicated greater exposure of mesopredators to WNV during the apparent epizootic phase. The period 2005-2006 was likely the enzootic phase because WNV antibody prevalence fell to a level similar to other flaviviruses. Our results suggest that, in mesopredators, vector-borne transmission is the primary route of infection and WNV antibodies persist for < 1 year. Mesopredators may be sensitive indicators of West Nile virus spill-over into humans and horses. Mesopredator sero-surveys may complement dead crow surveillance by providing additional data for the timing of public health interventions. Research is needed to clarify the dynamics of WNV infection in these mammals and their role as potential WNV amplifiers. Copyright ?? 2009 by The American Society of Tropical Medicine and Hygiene.

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Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Short report: Changes in West Nile virus seroprevalence and antibody titers among Wisconsin mesopredators 2003-2006
Series title:
American Journal of Tropical Medicine and Hygiene
Volume
81
Issue:
1
Year Published:
2009
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
American Journal of Tropical Medicine and Hygiene
First page:
177
Last page:
179
Country:
United States
State:
Wisconsin
Online Only (Y/N):
N
Additional Online Files(Y/N):
N