J Am Vet Med Assoc
February 2006
Objective: To describe the prevalence of West Nile virus (WNV) infection and evaluate factors associated with positive IgM capture ELISA results in equids with clinical signs compatible with WNV infection.
Design: Retrospective case series.
Sample Population: Laboratory submission forms from 1,104 equids tested for WNV in Colorado in 2003.
Objective: To determine outcome of equids in the western United States with clinical signs of West Nile virus (WNV) infection and identify factors associated with risk of death in infected equids.
Design: Cross-sectional study.
Animals: 484 equids in Nebraska and Colorado.