The Association of H1N1 Pandemic Influenza with Congenital Anomaly Prevalence in Europe

In the context of the European Surveillance of Congenital Anomalies (EUROCAT) surveillance response to the 2009 influenza pandemic, we sought to establish whether there was a detectable increase of congenital anomaly prevalence among pregnancies exposed to influenza seasons in general, and whether any increase was greater during the 2009 pandemic than during other seasons.We performed an ecologic time series analysis based on 26,967 pregnancies...