13 research outputs found

    Emergence of Oseltamivir-Resistant Pandemic (H1N1) 2009 Virus within 48 Hours

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    An oseltamivir-resistant influenza A pandemic (H1N1) 2009 virus evolved and emerged from zero to 52% of detectable virus within 48 hours of a patient’s exposure to oseltamivir. Phylogenetic analysis and data gathered by pyrosequencing and cloning directly on clinical samples suggest that the mutant emerged de novo
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