The infected individual, a student at Bard College, boarded a a 1:20 p.m. Sunday Amtrak train from New York City’s Penn Station to Rhinecliff, N.Y., according to ABC News. The train stopped in Albany before traveling on to Niagara Falls, ABC reported. 

“Anyone traveling on Amtrak train #283 from Penn Station in NYC to Albany on January 25, 2015, and who is not immune to measles or not sure of their measles immunity, should contact their primary care physician if they become ill with fever,” the New York State Department of Health said in a statement, according to the Associated Press.

Three New York state residents — one in Dutchess County and two in New York City — have been diagnosed with measles so far this year, ABC reported.
New York requires that college students taking six credits or more show proof of immunity to measles, according to university guidelines.