title: Respiratory tract infection caused by Mycobacterium bovis in a black swan (Cygnus atratus).
abstract: A 3-year-old male black swan (Cygnus atratus), belonging to a private collection, died suddenly and was subjected to post mortem examination. At necropsy, caseous exudate was observed in the lungs and air sacs; granulomatous lesions characterized by epithelioid macrophages and abundant mycobacteria were observed microscopically. Avian tuberculosis associated with Mycobacterium bovis was confirmed by bacteriologic isolation, biochemical tests and molecular methods. The organism was identified as spoligotype SB0140, which is frequently found in cattle and people in North America. In this case, interspecies transmission could have been the source of infection because the swan cohabited with cattle.
authors.affiliation: a Departamento de Medicina y Zootecnia de Aves , Universidad Nacional Autónoma de México , México DF , Mexico.
authors.forename: F D
authors.initials: FD
authors.lastname: Sánchez
authors.affiliation: b Departamento de Microbiología e Inmunología , Universidad Nacional Autónoma de México , México DF , Mexico.
authors.forename: I J
authors.initials: IJ
authors.lastname: Yela
authors.affiliation: b Departamento de Microbiología e Inmunología , Universidad Nacional Autónoma de México , México DF , Mexico.
authors.forename: E
authors.initials: E
authors.lastname: Alfonseca
authors.affiliation: c Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia , Universidad Nacional Autónoma de México , México DF , Mexico.
authors.forename: J
authors.initials: J
authors.lastname: Campuzano
authors.affiliation: c Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia , Universidad Nacional Autónoma de México , México DF , Mexico.
authors.forename: E
authors.initials: E
authors.lastname: Morales
authors.affiliation: d Práctica en clínica privada , México DF , Mexico.
authors.forename: C
authors.initials: C
authors.lastname: Aguilar
mesh_terms: D000818:Animals; D046090:Anseriformes / Q000382:microbiology*; D017809:Fatal Outcome; D008168:Lung / Q000382:microbiology / Q000473:pathology; D008297:Male; D008800:Mexico; D009163:Mycobacterium bovis / Q000235:genetics / Q000302:isolation & purification*; D012141:Respiratory Tract Infections / Q000175:diagnosis / Q000382:microbiology / Q000662:veterinary*; D014376:Tuberculosis / Q000175:diagnosis / Q000382:microbiology / Q000662:veterinary*
keywords: Black swan; Mycobacterium bovis; avian tuberculosis; mycobacteriosis