Introduction
The role of genetic variability in the susceptibility and outcome of influenza virus infection (IVI) remains largely unknown. We have previously demonstrated that variants at SFTPA2 influence the severity of H1N1pdm infection. We have now studied genetic variants at different genes, some of them previously associated with infections by influenza and/or other viruses. The purpose of this study was to analyze the role of genetic variants in the susceptibility and outcome of IVI.