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Thimerosal in Vaccines and Autism
Q1. What is thimerosal?
Thimerosal is a mercury-based preservative used in the manufacturing process of multidose vaccines. Thimerosal helps:
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Thimerosal: Updated Statement by NACI
In 2003 the National Advisory Committee on Immunization (NACI) published recommendations on the use of vaccines approved for use in Canada that contained the mercury-based preservative thimerosal, so that practitioners would have the necessary information to make sound recommendations for vaccine administration to patients and vaccine manufacturers would have guidance on the future development of vaccines for the Canadian market(1).
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Thimerosal in Seasonal Influenza Vaccine
What is thimerosal?
Thimerosal is a very effective preservative that has been used since the 1930s to prevent contamination in some multi-dose vials of vaccines (preservatives are not required for vaccines in single dose vials). Thimerosal contains approximately 49% ethylmercury. There is no convincing evidence of harm caused by the low doses of thimerosal in vaccines, except for minor reactions like redness and swelling at the injection site.
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Thiomersal and vaccines: questions and answers
What is thiomersal?
Thiomersal (also known as thimerosal, mercurothiolate and sodium 2-ethylmercuriothio-benzoate) is a mercurycontaining compound used to prevent bacterial and fungal growth in some vaccines during storage, and especially during use of opened multi-dose vials.
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