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An investigation into human pandemic influenza virus (H1N1) 2009 on an Alberta swine farm
journal contribution
posted on 2009-11-01, 00:00 authored by K J Howden, E J Brockhoff, F D Caya, L J McLeod, M Lavoie, J D Ing, J M Bystrom, Soren AlexandersenSoren Alexandersen, J M Pasick, Y Berhane, M E Morrison, J M Keenliside, S Laurendeau, E B RohonczyOn May 2, 2009 the Canadian Food Inspection Agency notified the World Organization for Animal Health that an emerging novel influenza A virus (pandemic H1N1 2009) had been confirmed on a swine farm in Alberta. Over a 4-week period pigs in this farrow-to-finish operation were clinically affected by respiratory disease consistent with an influenza A virus infection and the presence of active viral infection was confirmed in all production areas by real-time polymerase chain reaction (RT-PCR). Despite clinical recovery of animals, there was reluctance by purchasers to receive animals from this operation due to concerns about the effect on both domestic and international markets. The owner decided to depopulate the entire herd due to impending welfare issues associated with overcrowding and economic concerns resulting from the inability to market these animals. Carcasses were rendered or composted and did not enter the human food or animal feed chain. The source of virus in this herd was determined to be an infected human. Zoonotic transmission to 2 individuals responding to the outbreak was suspected and recommendations to prevent occupational exposure are discussed.
History
Journal
Canadian veterinary journalVolume
50Issue
11Pagination
1153 - 1161Publisher
Canadian Veterinary Medical AssociationLocation
Ottawa, Ont.ISSN
0008-5286Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2009, CVMAUsage metrics
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