The CDC finds that one in four toddlers may be under vaccinated. They're warning parents of young children to stay on top of their immunization schedules.The report finds 72 percent of 2-year-olds aren't getting vaccinated on time.
Click here for immunization schedules for kids of all ages..
Some parents find the immunization schedule overwhelming and sometimes they actually miss doses altogether.
Doctors say the recent outbreaks of vaccine preventable diseases such as measles are due to missed vaccines.
And some experts suggest children with vaccine lapses may need to be re-immunized.
Click here for more headlines from ABC7 Eyewitness News