title: US zoos keep watch for cross-species killer.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Knight
mesh_terms: D000820:Animal Diseases / Q000453:epidemiology* / Q000401:mortality / Q000635:transmission / Q000821:virology; D000818:Animals; D000836:Animals, Zoo / Q000821:virology*; D001717:Birds / Q000821:virology*; D009033:Culicidae / Q000821:virology; D004199:Disease Vectors; D006801:Humans; D011159:Population Surveillance; D013045:Species Specificity; D014481:United States / Q000453:epidemiology; D014901:West Nile Fever / Q000453:epidemiology* / Q000401:mortality / Q000635:transmission / Q000662:veterinary*; D014902:West Nile virus / Q000502:physiology*; D015047:Zoonoses / Q000453:epidemiology / Q000635:transmission