Disseminated nontuberculous mycobacteriosis due to <i>Mycobacterium avium</i> subsp. <i>hominissuis</i> infection in a reindeer from a zoo.

ABSTRACT: Bacteria in the Mycobacterium tuberculosis complex and nontuberculous mycobacteria may affect a variety of animal species under human care and pose public health risks as zoonotic pathogens. A case of sudden onset of lethargy and increased respiratory effort in a 5-y-old, intact female reindeer (Rangifer tarandus) under managed care had progressed to severe dyspnea despite aggressive treatment. The animal was euthanized due to poor prognosis. Postmortem findings included: disseminated miliary nodules in the lungs, pleura, small intestine, liver, and spleen; enlarged mesenteric lymph nodes; dilated mesenteric and serosal lymphatic vessels; and renal infarcts. Histologically, granulomatous lymphadenitis and lymphangitis with intrahistiocytic acid-fast bacilli were observed.

SUBMITTER: Winter JM 

PROVIDER: S-EPMC11775928 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature