Salmonellosis caused by Salmonella enterica subspecies arizonae (formerly known as Salmonella arizonae) was diagnosed in three of five captive black rhinoceroses (Diceros bicornis) at the Denver Zoological Gardens. Two of the three animals died despite supportive treatment. The other two rhinoceroses remained asymptomatic and were negative for Salmonella spp. after serial fecal cultures. The source for the salmonellosis was never identified.
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