Further evidence of southward transport of arboviruses by migratory birds.
D000818:Animals; D001102:Arbovirus Infections / Q000662:veterinary*; D001103:Arboviruses / Q000302:isolation & purification; D001715:Bird Diseases / Q000453:epidemiology* / Q000382:microbiology; D001717:Birds; D004463:Ecology; D004683:Encephalomyelitis, Equine / Q000453:epidemiology / Q000382:microbiology; D004812:Epidemiologic Methods; D005843:Geography; D012621:Seasons; D013045:Species Specificity; D014481:United States