After multiple discrete introductions of influenza A(H1N1)pdm09 virus into Sri Lanka, the virus was transmitted among humans, then swine. The spread of virus between geographically distant swine farms is consistent with virus dispersal associated with a vehicle used for swine transportation, although this remains unproven.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4257816 | PMC |
http://dx.doi.org/10.3201/eid2012.140842 | DOI Listing |
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