Salmonellosis in a human infant, a cat, and two parakeets in the same household

Salmonellosis occurred in a human infant, cat, and 2 pet parakeets in the same household. Salmonella typhimurium var copenhagen was isolated from all 4 subjects; however, its original source was never determined. The parakeets subsequently died, and necropsy revealed enteritis, foci of hepatic necrosis, and leptomeningitis.