"We're embarrassed. We're chagrined," one infectious disease expert said of the potential loss of status, 19 years after the disease was declared eliminated.
Health officials are attempting to locate anyone who may have been exposed to the virus or anyone showing symptoms.
The pressure from Prime Minister Boris Johnson follows U.S. lawmakers calling for accountability from tech giants over the spread of anti-vaccine propaganda.
The 43-year-old mother of three fell into a coma shortly after a flight from New York City to Tel Aviv.
The Siena College Research Institute poll comes as the state grapples with the largest outbreak in this year's U.S. measles resurgence.
The U.S. will lose its measles elimination status if the outbreaks continue, the CDC warns.
The anti-vaccine activist liked the California governor's concerns about an effort to crack down on fake medical exemptions.
The U.S. may lose its elimination status if current trends continue, the CDC said.
Anti-vaxxers gathered to share warnings and conspiracy theories at events in New York. One doctor even suggested that Jews are given "bad" vaccines.
The number of confirmed cases in the U.S. jumped by 75 within a single week.
A new law won't grant exemptions for the measles, mumps and rubella vaccine for personal or philosophical reasons.
The state has the highest kindergarten vaccine exemption rate in the country. Democrats want to change that.
The results come amid the worst measles outbreak in the country in 25 years.
Pennsylvania is the latest state to report a case to the CDC, bringing the number of states to 23.
Jens Spahn wants to crack down on those who don't protect their children and others against measles.
Curacao health officials were tasked with assessing more than 300 people on the Freewinds, where there was a confirmed measles case.
I'm still struck, 27 years later, that this disease could have easily killed me.
The vessel is underway after health officials provided vaccine to the ship.