Influenza A virus is the most unpredictable global threat, past pandemic witnessed the community swaps happened due to this virus. The recent emergence of H7N9 in China is the result of new and recent reassortmant of Influenza A virus. Emergence of a novel human influenza A virus (H1N1pdm) in 2009 is an unprecedent event of molecular virology. This novel emerged virus affected millions of persons and raised WHO pandemic alert to phase 6. Therefore continuous monitoring is required to have adequate genome information and to track mutations during course of viral evolution. In present study we investigated acute phase suspected H1N1pdm clinical samples from North India 2012-2013. H1N1pdm virus confirmed positive samples were preceded for virus isolation in MDCK cells. Complete HA gene was deciphered and phylogenetic analysis of Indian H1N1pdm virus isolate was carried out with respect to globally diversified H1N1pdm virus. CDC Real time RT-PCR revealed 15% positivity for H1N1pdm virus.
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