Can pregnant women receive the 2009 H1N1 vaccine that contains thimerosal?
There is no evidence that thimerosal (used as a preservative in vaccine packaged in multi-dose vials) is harmful to a pregnant woman or a fetus. However, because some women are concerned about exposure to preservatives during pregnancy, manufacturers will produce preservative-free seasonal and 2009 H1N1 flu vaccines in single dose syringes for pregnant women and small children. CDC recommends that pregnant women may receive flu vaccine with or without thimerosal.
