A new study says serious reactions to routine childhood vaccinations are rare and concludes the benefits outweigh any risk involved. It also refutes any link between vaccines and autism.

The findings "should be reassuring to parents of young children and to the clinicians who care for them," said Dr. Carrie Byington, of the University of Utah's Department of Pediatrics, writing in an editorial accompanying the review.

On America's Newsroom this morning, Dr. Marc Siegel emphasized the importance of parents vaccinating their children. Failure to do so has been linked with recent outbreaks of measles, since many parents have refused the MMR vaccine over autism fears.

Siegel said it's understandable that parents worry when they see a needle go into their newborn and want to know exactly what will occur. But he maintains that "fear of the disease should be much worse than fear of the vaccine."

He also pointed out that the new RAND Corporation-Harvard University study, which reviewed 67 past studies on vaccines, also found no benefit to delaying vaccines. Siegel said the study actually showed more side effects occurring when the MMR vaccine was delayed.

The Sunday Housecall co-host lamented all the money being spent on these types of studies, arguing the money could be better spent on researching more likely causes of autism.