Boston Health Officials Warn Of Measles Exposure After Confirmed Case

City health officials issued a measles warning Friday after a person diagnosed with the virus took a bus on Tuesday from New York City to Boston and then to New Hampshire.

The diagnosed person took Greyhound Bus #2520 from New York City to South Station in Boston. The passenger then traveled to Manchester, N.H., on Boston Express Bus #5178, which stopped in Tyngsborough and Nashua, N.H., the Boston Public Health Commission said in a statement.

Anyone who was on the Greyhound bus from 4 p.m. to 8:30 p.m., at South Station from 8:30 p.m. to midnight, or on the Boston Express bus from 10 p.m. to 11:30 p.m. may have been exposed, the statement said.

Individuals who may have been exposed could became ill between March 3 and March 19, according to officials.

Measles is spread through the air, usually through coughing and sneezing, and may remain in the area for up to two hours after an infected person has left. Symptoms may include a high fever, runny nose, cough and red eyes, as well as a skin rash, the commission said.

"Measles is a serious disease, particularly in children who have not been vaccinated," Jenifer Leaf Jaeger, director of the Infectious Disease Bureau at the commission, said in a statement. "If you don't know your immunity status and think you have been exposed, contact your healthcare provider immediately."