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The continuous and sporadic human transmission of highly pathogenic avian H5N1 and H7N9 influenza viruses illustrates the urgent need for efficacious vaccines. However, all tested vaccines for the H5N1 and H7N9 viruses appear to be poorly immunogenic in mammals. In this study, a series of vaccines was produced using reverse genetic techniques that possess HA and NA genes from the H5N1 virus in the...
A naturally-occurring H275Y oseltamivir resistant variant of influenza A (H1N1) virus emerged in 2007, subsequently becoming prevalent worldwide, via an undetermined mechanism. To understand the antigenic properties of the H275Y variant, oseltamivir resistant and susceptible strains of H1N1 viruses were analyzed by hemagglutination inhibition (HI) and microneutralization assays. HI analysis with H1-positive...
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