[SeekAndFind]

RE: Why didn’t Polio, or Rubella, or any other viruses out mutate their vaccines?

Maybe because :

1) They are different types of viruses. Coronaviruses like Covid-19 are like the flu and cold virus, they mutate faster.

2) The prevalent mRNA vaccines are different from the vaccines developed for Polio and Rubella.

[David Chase]

“ The prevalent mRNA vaccines are different from the vaccines developed for Polio and Rubella.”

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Johnson & Johnson, and AstraZeneca are Not mRNA vaccines. They are the more traditional type.