USA TODAY has updated this 2011 story about vaccine myths.

More parents have been skipping or delaying vaccinations for their children, a trend that has contributed to recent outbreaks of nearly forgotten diseases such as measles, mumps and whooping cough. Much of the anxiety about vaccines is based on myths or misinformation, infectious disease specialists say. Leading experts talked to USA TODAY's Liz Szabo to address some of the reasons parents hesitate to vaccinate their kids.