Equine disease surveillance, April to June 2009.
D000818:Animals; D006566:Herpesviridae Infections / Q000453:epidemiology / Q000662:veterinary; D006734:Horse Diseases / Q000453:epidemiology* / Q000209:etiology; D006736:Horses; D018144:Rhadinovirus; D018571:Sentinel Surveillance / Q000662:veterinary; D006113:United Kingdom / Q000453:epidemiology; D014901:West Nile Fever / Q000453:epidemiology / Q000662:veterinary* / Q000821:virology; D014902:West Nile virus / Q000145:classification