What if a pregnant woman received the adjuvanted vaccine because it was available first, is it going to be harmful?
The World Health Organization (WHO) has strongly recommended that pregnant women be immunized against the H1N1 2009 influenza virus, even if a unadjuvanted vaccine is not available. More safety data has been collected on the use of unadjuvanted seasonal vaccines in pregnant women. The recommendation to use the unadjuvanted vaccine is only precautionary.