Pandemic (H1N1) 2009 Virus on Commercial Swine Farm, Thailand
Donruethai Sreta, Siriporn Tantawet, Suparlark N. Na Ayudhya, Aunyaratana Thontiravong, Manoosak Wongphatcharachai, Jiradej Lapkuntod, Napawan Bunpapong, Ranida Tuanudom, Sanipa Suradhat, Linda Vimolket, Yong Poovorawan, Roongroje Thanawongnuwech, Alongkorn Amonsin, and Pravina Kitikoon
Author affiliations: Author affiliations: Chulalongkorn University, Bangkok, Thailand (D. Sreta, S.N. Na Ayudhya, A. Thontiravong, M. Wongphatcharachai, J. Lapkuntod, N. Bunpapong, R. Tuanudom, S. Suradhat, L. Vimolket, Y. Poovorawan, R. Thanawongnuwech, A. Amonsin, P. Kitikoon); Mahidol University, Nakhon Pathom, Thailand (S. Tantawet)
Figure A1. Phylogenetic trees of A) hemagglutinin (HA) and B) neuramindase (NA) genes of swine influenza viruses, Thailand. Red symbols indicate viruses isolated in this study. Scale bars indicate nucleotide substitutions per site.
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