Bovine respiratory syncytial virus infection in feedlot cattle cases in Argentina

Author:

Ferella Alejandra1,Streitenberger Nicolás2ORCID,Pérez Aguirreburualde María S.3,Dus Santos María J.1,Fazzio Luis E.4,Quiroga María A.4,Zanuzzi Carolina N.4,Asin Javier2ORCID,Carvallo Francisco5ORCID,Mozgovoj Marina V.1,Uzal Francisco A.2ORCID

Affiliation:

1. Institute of Virology, The National Institute of Agriculture Technology, Castelar, Argentina

2. California Animal Health and Food Safety Laboratory System, San Bernardino branch, School of Veterinary Medicine, University of California–Davis, CA, USA

3. College of Veterinary Medicine, University of Minnesota, St. Paul, MN, USA

4. Department of Veterinary Pathology, School of Veterinary Sciences, National University of La Plata, La Plata, Argentina

5. Virginia-Maryland College of Veterinary Medicine, Blacksburg, VA, USA

Abstract

Although bovine respiratory syncytial virus (BRSV) infection has been reported in cattle in Argentina, it has not been associated with pneumonia in Argentina. We report here 5 cases of bovine pneumonia associated with BRSV. Autopsies were performed on 35 beef cattle with gross and/or microscopic lesions of pneumonia from 3 commercial feedlots. Lung samples in 5 of 35 animals were BRSV-positive by reverse-transcription nested PCR. The lungs of 2 of these 5 animals were coinfected with Mannheimia haemolytica, and 1 with bovine viral diarrhea virus 1. Microscopically, the lungs of 3 of the 5 BRSV PCR–positive animals had fibrinosuppurative bronchopneumonia, with or without pleuritis; 2 of the 5 had interstitial pneumonia. We conclude that BRSV is part of the bovine respiratory disease complex in Argentina.

Publisher

SAGE Publications

Subject

General Veterinary

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