Vaccines may contain "live viruses, killed viruses, purified viral proteins, inactivated bacterial toxins or bacterial polysaccharides," which is how our bodies know how to develop antibodies and an immune response against the infection that the vaccine is supposed to protect us against. Vaccines also contain additives and preservatives.
Thimerosal: The most well-known preservative in vaccines is thimerosal, which some people thought could possibly be linked to autism. No link to autism or other conditions have ever found, but because of concerns that thimerosal could be harmful and since alternatives to thimerosal were available, the FDA states that "thimerosal has been removed from or reduced to trace amounts in all vaccines routinely recommended for children 6 years of age and younger, with the exception of the inactivated influenza vaccine." While multidose vials of flu vaccine with…
