Preventing vCJD (continued)

The risk of vCJD from the following sources is estimated to be extremely low:

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Vaccines: Some parts of cows, including blood, enzymes and amino acids, are used to grow the bacteria and viruses needed to make certain vaccines. Not all vaccines are grown in cattle parts, however, and the Food and Drug Administration (FDA) recommends that companies producing such vaccines use cattle parts only from low-risk countries. These recommendations apply to cosmetics as well. The FDA keeps a listing on its website of companies that use cattle from countries that aren't classified as low-risk.