In three HCMV-infected renal transplant recipients, we have evidenced different viral evolutive polymorphisms including point mutations, recombination, and occasionally suggesting the intervention of several HCMV strains or a quasispecies-like distribution. This variability could contribute to viral adaptability in pathogenesis.
The recent emergence of seasonal influenza A(H1N1) strains resistant to oseltamivir makes it necessary to monitoring carefully the susceptibility of human influenza viruses to neuraminidase inhibitors. We report the prevalence of the oseltamivir resistance among influenza A viruses circulating in south-western France over the past three years: seasonal influenza A(H1N1), seasonal influenza A(H3N2), and the influenza A(H1N1)v viruses associated with the ongoing 2009 pandemic. The main result of the study is the absence of oseltamivir resistance in the pandemic H1N1 strains studied so far (n=129).
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