> If they were vaccinated, they wouldn't have been injured. Vaccine-derived polio outbreaks include type 2, the IPV vaccines used in the US since 2000 are only

> If they were vaccinated, they wouldn't have been injured. Vaccine-derived polio outbreaks include type 2, the IPV vaccines used in the US since 2000 are only for types 1 and 3. It might help, but it won't be as effective as the older version.