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On rare occasions the live vaccine actually reverts. Polio is an amazing story because the live vaccination campaign may have had collateral impact on the famil

On rare occasions the live vaccine actually reverts. Polio is an amazing story because the live vaccination campaign may have had collateral impact on the families of the vaccinated as they shed particles.

Vecr 2y ago
Rare? It's in almost everyone who gets the vaccine. I don't have a direct citation, but I don't think it's generally doubted, though it's not something that's easy to do a direct controlled test on.
- foobiekr 2y ago
  reverts as in becomes an acute polio case