Are there additives, like thimerosal, in the vaccine?
Some of the vaccine shots will contain thimerosal. Thimerosal is a mercury-containing preservative used in some vaccines and other products since the 1930s. There is no scientific evidence of harm caused by the low doses of thimerosal in vaccines, except for minor reactions like redness and swelling at the injection site. Because some women are concerned about exposure to preservatives during pregnancy, those making the vaccine will produce preservative-free seasonal and H1N1 flu vaccines in single dose syringes for pregnant women and small children. There is no thimerosal in the nasal spray vaccine.
