Suffolk County health officials have received their first confirmed case of the measles, authorities announced.

The woman is from outside of the US, but traveled to New York, where a laboratory in Suffolk County confirmed she was infected with the measles, according to a Department of Health Services press release from Thursday.

The victim is under the age of 50, a source familiar with the case told The Post. Additional information was not immediately available.

Heath officials warned that anyone who visited BNB Bank on East Montauk Highway in Hampton Bays from around noon to 1 p.m. Saturday might have been exposed.

Suffolk County Executive Steve Bellone, Health Commissioner Dr. James Tomarken and other top brass are expected to speak about the confirmed case at 10:30 a.m. Friday.

As of Wednesday afternoon, 695 cases of the measles had been reported in 22 states — “the greatest number of cases reported in the United States since measles was eliminated from this country in 2000,” according to a press release by the Centers for Disease Control and Prevention.

“The high number of cases in 2019 is primarily the result of a few large outbreaks — one in Washington state and two large outbreaks in New York that started in late 2018,” the release reads. “The outbreaks in New York City and New York state are among the largest and longest lasting since measles elimination in 2000.”

Mayor Bill de Blasio declared a public health emergency in New York City earlier this month.