Decades ago, parents who chose not to immunize their kids for philosophical or religious reasons were a tiny fraction of the population, according to an inewsourceanalysis of California data.
Their numbers are still small, but they grew from about one-half of a percent in the 1980s and ‘90s, to 2.5 percent statewide in this most recent school year.
“Parents did not question the vaccines at that time. I think there was a lot more confidence and trust in the physicians,” said Catherine Flores-Martin, director of the California Immunization Coalition, a vaccine advocacy group.
Blame the Internet and a now discredited study linking autism to vaccines for the mistrust and misinformation about vaccine safety, Flores-Martin said.