期刊
EMERGING MICROBES & INFECTIONS
卷 1, 期 -, 页码 -出版社
TAYLOR & FRANCIS LTD
DOI: 10.1038/emi.2012.33
关键词
human H3N2v; H3N2pM; influenza; fair; swine
资金
- Minnesota Center of Excellence for Influenza Research and Surveillance with federal funds
- Centers of Excellence for Influenza Research and Surveillance
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Department of Health and Human Services [HHSN266200700007C]
- USDA/APHIS NVSL
Evidence accumulating in 2011-2012 indicates that there is significant intra-and inter-species transmission of influenza A viruses at agricultural fairs, which has renewed interest in this unique human/swine interface. Six human cases of influenza A (H3N2) variant (H3N2v) virus infections were epidemiologically linked to swine exposure at fairs in the United States in 2011. In 2012, the number of H3N2v cases in the Midwest had exceeded 300 from early July to September, 2012. Prospective influenza A virus surveillance among pigs at Ohio fairs resulted in the detection of H3N2pM (H3N2 influenza A viruses containing the matrix (M) gene from the influenza A (H1N1) pdm09 virus). These H3N2pM viruses were temporally and spatially linked to several human H3N2v cases. Complete genomic analyses of these H3N2pM isolates demonstrated >99% nucleotide similarity to the H3N2v isolates recovered from human cases. Actions to mitigate the bidirectional inter-species transmission of influenza A virus between people and animals at agricultural fairs may be warranted.
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