This paper reports on two fatal cases of Salmonella Typhimurium phage type DT160 infection in Moluccan cockatoos (Cacatua moluccensis) from a zoological collection in Italy. No previous clinical signs were observed in birds before death, except for anorexia and mild diarrhea in one bird. At post mortem, necrotic foci surrounded by a hyperemic halo were observed in lungs, heart, liver, spleen, kidneys, and intestine. Microscopically, heterophils and macrophages with rare lymphocyte infiltration associated with gram-negative, rod-shaped bacteria aggregates were detected in necrotic foci. Bacteriology confirmed the presence of Salmonella Typhimurium phage type DT160 in the tissues of birds. The source of Salmonella Typhimurium in these birds remains unknown, but the authors emphasize the need to better control salmonella infections in these avian species because they are important zoonotic agents and responsible for disease in animals and humans. This is the first documentation of Salmonella Typhimurium phage type DT160 infection in Moluccan cockatoos.
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Vol. 54 • No. 1