In 2008, 39 percent of parents became educated about vaccinations and refused or delayed vaccines for their children. This compares to just 22 percent in 2003.
The data comes from a telephone survey of the parents of 9,000 toddlers. Many of the parents were worried about whether the vaccines were safe or effective.
- 27 percent said too many shots were recommended
- 26 percent questioned whether vaccines really worked
- 25 percent cited worries that vaccines might cause autism
- 24 percent worried about side effects
Pediatric Academic Societies Meeting Vancouver, Canada May 1-4, 2010