> (And we use the non-sterilising, non-virus containing non-polio-producing IPV in the United States. So the unvaccinated can change babies’ diapers without fea

> (And we use the non-sterilising, non-virus containing non-polio-producing IPV in the United States. So the unvaccinated can change babies’ diapers without fear.) Not necessarily. All those migrants coming into the country? Mostly they got the cheaper OPV vaccine, if they got any. There was a case of it last year in New York: https://www.cdc.gov/vaccines/vpd/polio/hcp/vaccine-derived-poliovirus-faq.html https://www.cdc.gov/vaccines/vpd/polio/hcp/vaccine-derived-p...