The answers in the Q&A are not altered or updated after the published date. For current information and recommendations, consult your health care provider.
Thimerosal is added to vaccines produced in multi-dose vials to prevent bacterial growth. Today, all routine childhood vaccines used in BC (with the exception of certain flu vaccines) are produced in single-dose vials and do not require thimerosal.Read Full Answer
Some vaccines are made from live germs or toxins, which need to be killed or made inactive so they do not cause disease. Formaldehyde is used to do this, and then it is diluted during the vaccine manufacturing process. Residual quantities of formaldehyde may be found in some vaccines, however this tiny amount does not pose a safety concern.Read Full Answer
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