Determinants of non-vaccination against pandemic 2009 H1N1 influenza in pregnant women: a prospective cohort study.
BackgroundIn October 2009, the French government organized a national-wide, free of charge vaccination campaign against pandemic H1N1 influenza virus, especially targeting pregnant women, a high risk group for severe illness.The study objective was to evaluate pandemic flu vaccine uptake and factors associated with non-vaccination in a population o