Pandemic influenza A(H1N1)v: Human to pig transmission in Norway?

M Hofshagen; B Gjerset; C Er; A Tarpai; E Brun; B Dannevig; T Bruheim; I G Fostad; B Iversen; O Hungnes; B Lium

doi:10.2807/ese.14.45.19406-en

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Pandemic influenza A(H1N1)v: Human to pig transmission in Norway?
M Hofshagen¹ , B Gjerset¹ , C Er¹ , A Tarpai¹ , E Brun¹ , B Dannevig¹ , T Bruheim² , I G Fostad³ , B Iversen⁴ , O Hungnes⁴ , B Lium¹
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Affiliations: ¹ National Veterinary Institute, Oslo, Norway ² National Veterinary Institute, Trondheim, Norway ³ Norwegian Food Safety Authority, Levanger, Norway ⁴ Norwegian Institute of Public Health, Oslo, Norway

Correspondence:
B Lium
bjorn.lium vetinst.no
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Citation style for this article: Hofshagen M, Gjerset B, Er C, Tarpai A, Brun E, Dannevig B, Bruheim T, Fostad I G, Iversen B, Hungnes O, Lium B. Pandemic influenza A(H1N1)v: Human to pig transmission in Norway?. Euro Surveill. 2009;14(45):pii=19406. https://doi.org/10.2807/ese.14.45.19406-en Received: 12 Nov 2009

Abstract

In Norway there is an ongoing outbreak in pigs of infections with pandemic influenza A(H1N1)v virus. The first herd was confirmed positive on 10 October 2009. As of 26 October, a total of 23 herds have been diagnosed as positive. The majority of the herds seem to have been infected by humans. Sequence analysis of pig viruses from the index farm shows that they are identical or virtually identical to human viruses from the same geographical region.