Two Americans contracted measles from a third, infected passenger on a flight to San Francisco, US health officials reported Wednesday.
The San Francisco Department of Health announced in a statement that the three people were flying from an undisclosed foreign country to the US in February.
One of them had previously caught the virus, and one San Francisco resident and one Santa Cruz, California, resident were infected in the air.
Though measles is highly contagious, the health officials assured the public that no additional cases had been reported in connection to the three passengers, and that these would have appeared within 21 days of the exposure.
Measles outbreaks have cropped up across the globe, and two likely unvaccinated people traveling from a foreign country to San Francisco contracted the virus on a flight
In 2000, the US declared that the country was free of measles, attributing the elimination of the deadly infection to the MMR (measles, mumps and rubella) vaccine.
But, now, on the heals of the anti-vaxxer movement, the measles are back, and threatening the lives of babies, children and people with compromised immune systems for the first time in nearly two decades.
This year, there are 11 states with ongoing outbreaks.
The dangerous disease is spreading in California, Colorado, Connecticut, Georgia, Illinois, Kentucky, New Jersey, New York, Oregon, Texas and Washington.
Typically, the makes its way into the US when travelers
