Risk of fetal death after pandemic influenza virus infection or vaccination

摘要

During the 2009 influenza A (H1N1) pandemic, pregnant women were vulnerable to severe influenza, with increased risks of adverse fetal outcomes and maternal death. Pregnant women were advised to be vaccinated in the second or third trimester. After this pandemic, national health data were used to assess the effectiveness of pandemic vaccine in pregnant women and the effect of vaccination or influenza on fetal survival.