One anti-vaccine parent planned to quit her part-time job to "become an educator."

Americans have received billions of doses of vaccines for everything from measles to the flu. In 30 years, very few injury claims have been filed with the federal government.

New York eliminated the religious exemption to vaccine requirements for schoolchildren Thursday, as the country’s worst measles outbreak in decades prompts states to reconsider giving parents ways to opt out of immunization rules. The Democratic-led state senate and assembly voted Thursday to repeal the exemption, which allows parents to cite religious beliefs to forego getting their child the vaccines required for school enrollment.

The actress explained her controversial lobbying against California's anti-vaccine bill. Just hours after Jessica Biel raised eyebrows by seemingly becoming the latest Hollywood star to lend a voice to anti-vaccine views, when she joined Robert F. Kennedy, Jr. to lobby against a California state bill that would limit medical exemptions for immunizations without approval from a public health officer, the actress took to Instagram to clarify her position.

The "vast majority" of people commenting, sharing and liking anti-vaccination information on Facebook are women, a new study finds. Researchers dug into the world of anti-vaccination people — better known as anti-vaxxers — by looking at data from six of the largest, public anti-vaxxer pages on Facebook. By analyzing two years' worth of data from these pages, the researchers determined that these communities are extremely active, negative in tone and primarily female.

An ultra-Orthodox rabbi falsely described the measles outbreak among Jews as part of an elaborate plan concocted by Mayor Bill de Blasio of New York to deflect attention from “more serious” diseases brought by Central American migrants.

A new study ranks the risks in U.S. counties by the numbers of unvaccinated children and proximity to international airports. But no one predicted the outbreak in Brooklyn. Chicago, Los Angeles and Miami are the cities most likely to see the next measles outbreaks, according to an unusual new study. Researchers at the University of Texas at Austin and Johns Hopkins University mapped the 25 American counties most at risk of measles because of their vaccine-exemption rates and proximity to airports.

Instagram will block hashtags spreading "verifiably false" information about vaccinations. The social network already blocks hashtags that are themselves false claims, such as #vaccinescauseautism.

An anti-vaxxer Texas lawmaker is facing criticism for attacking a prominent vaccinologist and branding inoculations “sorcery.” Republican Rep. Jonathan Stickland—who left the hardline conservative Freedom Caucus last week—began a Twitter spat with Peter Hotez, a professor at the Baylor College of Medicine, on Tuesday, the Houston Chronicle reported.

People who spread myths about the harms of vaccines have “blood on their hands” the health secretary has said as he refused to rule out compulsory immunisations. While Matt Hancock downplayed suggestions that it would be made illegal not to vaccinate children, he said it could be considered if stalling immunisation rates are not addressed.

The agenda of anti-vaccination activists may be causing a drag on the U.S. economy as the measles outbreak forces people to stay out of work and seek medical care, the director for the National Institute of Allergy and Infectious Diseases said Monday. “If you wind up getting more infections and diseases that were vaccine-preventable, those are entirely avoidable burdens on the economy,” Dr. Anthony Fauci told CNBC. “When people get sick, they lose work, they lose their finances from work, [and] they have hospital costs.”