Immunization Missouri childhood vaccination rates still below average By Véronique LaCapra • Sep 6, 2012 (via Flickr/Daniel Paquet) Missouri is still near the bottom of the pack when it comes to childhood vaccination rates. The results of the CDC's annual National Immunization Survey show about 68 percent of children under age 3 got all the required vaccinations in 2011. That's about the same as in 2010, and up from 56 percent in 2009. In Illinois, vaccination rates fell from about 75 percent in 2010 to about 72 percent in 2011. Mo. jumps 11 spots in toddler immunization rankings By Véronique LaCapra • Sep 1, 2011 (via Flickr/Daniel Paquet) Missouri is doing a better job of getting toddlers vaccinated for childhood diseases. Results of the CDC’s National Immunization Survey show Missouri rose from last in the rankings in 2009 up to 39th last year.