"If children receive vaccines too close together or too early, they're not as likely to be protected, and if you have a lot of that, then you're more likely to have disease outbreaks," Luman said.
One reason for lack of strict adherence to the vaccine schedule may be a fading consciousness among today's parents of what these immunizations are protecting children against. Frenck said he remembers seeing a childhood friend in an iron lung, the result of polio.
"It scared me to death," he said. "Kids these days, and probably most adults, don't even known what an iron lung is -- and that's because of immunization." . . . . read more