The problem isn't that it takes a lot of skill to inject someone. The problem is that it takes a lot of community outreach and organization to have people actu

The problem isn't that it takes a lot of skill to inject someone. The problem is that it takes a lot of community outreach and organization to have people actually show up for a schedule of 4 shots at different ages. https://www.cdc.gov/vaccines/vpd/polio/public/index.html https://www.cdc.gov/vaccines/vpd/polio/public/index.html gives the US schedule, four shots at, "2 months old, 4 months old, 6 through 18 months old, and 4 through 6 years old." We do a LOT to make sure that people have taken those vaccines. Including checking that you have when you enroll in school.