Anti-Vaccination Movement

The doctor who has issued the most vaccine exemptions in the San Diego area has been charged with gross negligence for granting an exemption to a four-year-old based on "irrelevant family medical history" and inadequate documentation.

The anti-vaccine lobby has only grown more powerful as measles spreads across the U.S. Unless congressional action is taken, other vaccine-preventable diseases are likely to rise.

The number of measles cases in the Philippines jumped 500 percent in just one year. Authorities urged parents to vaccinate their children.

The percentage of American children under two years of age who have received no vaccinations has quadrupled since 2001.

Anti-vaccine activities appear to be more of a western phenomenon, especially in the Pacific Northwest and American Southwest.

"New foci of antivaccine activities are being established in major metropolitan areas, rendering select cities vulnerable," researchers reported.

Researchers analyzed posts on popular anti-vaccine Facebook pages.

Nonmedical vaccine exemptions were on the rise up through 2013. Now they appear to have leveled off.

"It's a little different," Liff said. "My patients eat dirt. They eat poop."

Vaccine skeptics gathered in Washington, D.C., today with accusations of a government-led cover-up of data linking childhood immunizations to autism. The protest culminated in a talk by outspoken anti-vaccine activist Robert F. Kennedy Jr.

The American Medical Association says religious and "personal belief" exemptions from childhood vaccines are dangerous.

Nearly 80 percent say they believe all children should be vaccinated.

You have been duped and misled, explains a doctor.

Two potential presidential candidates throw in with the anti-vaccination crowd, but that may backfire.

Did 108 people really die from measles vaccines in the past decade? No, but don't tell anti-vaxxers that.

An outbreak that started just before Christmas has now infected dozens.

A rash of measles cases in Colorado, Utah and Washington State and California have been traced back to the popular theme park.