Are There Toxicological Concerns with Preservatives in Vaccines?
Preservatives are used to prevent contamination in multi-dose vaccine vials. One commonly used preservative is thimerosal, which contains ethylmercury. While concerns have been raised about mercury exposure, research shows that ethylmercury is processed differently in the body compared to methylmercury, reducing its potential toxicity. Most vaccines now use thimerosal-free formulations.
