The total number of equine cases of illness caused by West Nile virus (WNV) confirmed at the USDA’s National Veterinary Services Laboratories (NVSL) or reported by state officials so far this year is 4,606, as of Sept. 12. The cases are from 32 states:

Alabama (27), Arkansas (43), Colorado (139), Florida (130), Georgia (15), Illinois (249), Indiana (166), Iowa (225), Kansas (136), Kentucky (173), Louisiana (299), Maryland (1), Michigan (53), Minnesota (356), Mississippi (138), Missouri (174), Montana (32), Nebraska (709), New Jersey (13), New Mexico (19), New York (4), North Dakota (446), Ohio (55), Oklahoma (27), Pennsylvania (7), South Dakota (527), Tennessee (42), Texas (346), Vermont (3), Virginia (3), Wisconsin (26), and Wyoming (23)