Are you worried about fetal bovine serum in vaccines?
Are you wondering why they put fetal bovine serum in vaccines?
Well, it is not really added to the vaccine, like a preservative.
Instead, the CDC explains why fetal bovine serum may be in some vaccines:
In the manufacture of viral vaccines, the virus may be grown in cells. These cells need a source of nutrition, which in some instances may be provided by fetal bovine serum.
So fetal bovine serum is used as a growth media. And it is eventually removed.
There is no risk that using these materials from cows could cause mad-cow disease.
For more information:
- What’s in Vaccines
- FDA – Bovine Derived Materials Used in Vaccine Manufacturing Questions and Answers
- Vaccines and Mad-Cow Disease
- FDA – Vaccines and Variant CJD (vCJD) Questions and Answers