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Understanding Thimerosal, Mercury, and Vaccine Safety

This fact sheet explains what thimerosal is and why it is used as a preservative in some multi-dose vials of influenza vaccine, and highlights conclusions from studies examining thimerosal safety in vaccines.

Author: US Centers for Disease Control and Prevention

Published: 2012

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730 KB PDF (Located at

Resource types: Fact sheet

Diseases/vaccines: Influenza

Topics: Vaccine safety and performance, Disease/vaccine specific information

Regions: North America and Europe