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ulf5576 t1_isnafur wrote

they only found strains contained in the polio vaccine in sewage water , but no polio could be confirmed in humans .. the few rare cases every few years all have their polio from the vaccine though ..

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fatbob42 t1_isnb0og wrote

There are still some wild cases (worldwide) but, (at least a few years ago) there were more vaccine-derived cases, which was why they were switching vaccines to the more expensive one.

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Coldovia t1_iso0s6m wrote

Wrong, a case was found in Rockland County NY USA a few months ago. In a person.

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NathamelCamel t1_isnqe6y wrote

Are you talking just about the western world because it's still a problem in parts of Pakistan and Afghanistan due to lack of vaccination

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St3vion t1_isnzojz wrote

The inactivated vaccine version can mutate to become active again and infect those with weak immunity, ie the unvaxxed...

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