Barry Schwartz 🫖Contrary to common myth, the MMR vaccine is not a cocktail of three viruses. It is a cocktail of no viruses. The viruses are inactivated. Thus, the child or adult receiving the vaccine will catch none of the diseases. They will merely, hopefully, become immune to them. Their immune systems will be strengthened—perhaps that's why the site of the shot gets sore, etc. It is an immune reaction.
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