USDA - APHIS - Animal Health Monitoring & Surveillance

West Nile Virus - States with Equine Cases

West Nile virus equine cases, 2012
Total Cases - 627

2012 equine cases of West Nile virus in each State

West Nile virus equine cases, 2011
Total cases - 87

US map showing the number of equine West Nile virus cases in each State

West Nile virus equine cases, 2010
Total cases - 125

Equine cases of West Nile Virus for 2010 - preliminary

West Nile virus equine cases, 2009
Total Cases - 276

Map of US showing 2009 distribution of equine WNV cases

West Nile virus equine cases, 2008
Total Cases - 179

Map of U.S.

West Nile virus equine cases, 2007
Total Cases - 468

equine West Nile virus cases for 2007 map

West Nile virus equine cases, 2006
Total Cases - 1,086

West Nile virus equine cases, 2005
Total Cases - 1,088

West Nile virus equine cases, 2004
Total Cases - 1,406

West Nile virus equine cases, 2003
Total Cases - 5,181

West Nile virus equine cases, 2002
Total Cases - 15,257

West Nile virus equine cases, 2001
Total Cases - 738

West Nile virus equine cases, 2000
Total Cases - 60

West Nile virus equine cases, 1999
Total Cases - 25