Officials learned that European tourists exposed more of the Hudson Valley to a serious respiratory disease that's considered very contagious.

As previously reported, health officials from New York State confirmed two tourists with measles from Europe visited Putnam and Orange counties as well as Brooklyn.

According to the Westchester County Department of Health, the pair later visited Westchester County.

Health officials warn anyone who recently visited the following locations may have been exposed to measles:

  • Kingdom Hall of Jehovah’s Witnesses, 873 New Jersey Avenue, Brooklyn
  • Watchtower World Headquarters, 1 Kings Drive, Tuxedo Park
  • Watchtower Educational Center, 100 Watchtower Drive, Patterson
  • Chestnut Mart (Mobil Station), Hutchinson River Parkway, White Plains

The pair were in Brooklyn on April 15 between 10 a.m. and 2 p.m. and Tuxedo Park on April 16 between 11 a.m. and 4:30 p.m. On April 17, they were in Patterson between 10 a.m. and 4 p.m. and White Plains between 2:45 p.m. and 5:15 p.m.

"Individuals who were exposed and not immune to measles could develop signs and symptoms of measles 7-21 days after exposure," the Westchester County Department of Health wrote in an alert on its website. "It is spread by airborne contact with an infected person through coughing and sneezing."

According to the New York State Department of Health, measles is a serious respiratory disease that causes a rash and fever.

"It is very contagious. You can catch it just by being in a room where someone with measles coughed or sneezed,"  New York State Department of Health wrote on its website.

Symptom usually starts 10 to 12 days after a person is exposed. Symptoms include a fever, cough, runny nose and red watery eyes.

A rash may appear two to four days after the fever and last five to six days, according to the New York State Department of Health.

If you think you may have been affected or experience symptoms you should call your doctor.