Factsheet: Questions and Answers on Vaccine Ingredients - What Parents Should Know (English, Spanish)
Factsheet: Questions and Answers on Vaccine Ingredients - What Parents Should Know (English, Spanish)
Date posted:
February 20, 2025
Last reviewed:
February 20, 2025
The Children's Hospital of Philadelphia (CHOP)
Factsheet addresses concerns parents may have about ingredients in vaccines, such as aluminum, mercury, gelatin and antibiotics. The sheet describes some of the ingredients used in vaccines, how we know they are safe, and why they are necessary.
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