Is thimerosal safe in vaccine

Thimerosal, a Mercury-containing compound used as a preservative in some vaccines, has been extensively studied for safety. Research has shown that thimerosal does not pose a significant risk to human health, and its use in vaccines has not been linked to autism or other serious health issues. In response to public concern, thimerosal has been removed or reduced in most childhood vaccines in the U.S. and other countries, but it remains in some flu vaccines. Overall, vaccines are considered safe and effective in preventing diseases.