- 26 states have not reached a federal target for vaccination
- Mississippi has the highest level of vaccination; Colorado has the lowest
- Many parents of unvaccinated children are concerned about side effects, autism and children having too many shots
Share your message to parents who don't vaccinate on CNN iReport.
(CNN)They're a relatively small group of parents in a big country. But their decision not to vaccinate their children can have a profound impact on public health.