Epizootiology.
D000367:Age Factors; D000820:Animal Diseases / Q000453:epidemiology* / Q000401:mortality / Q000517:prevention & control; D000818:Animals; D004196:Disease Outbreaks / Q000662:veterinary; D004463:Ecology; D004812:Epidemiologic Methods; D004813:Epidemiology; D006801:Humans; D009017:Morbidity; D009026:Mortality; D009934:Organization and Administration; D012106:Research; D012737:Sex Factors; D014481:United States; D015047:Zoonoses / Q000453:epidemiology