VANCOUVER, Wash. (AP) — Officials say an unvaccinated child in Vancouver, Washington has contracted the measles after travelling internationally.

Clark County Public Health officials said Wednesday that the child passed through the Portland International Airport and PeaceHealth Southwest Medical Center in Vancouver Nov. 14 while contagious.

The agency warned that people may have been exposed to the virus. Anyone exposed who is susceptible to the virus could start having symptoms between Nov. 18 and Dec. 9.

Clark County has had 72 confirmed measles cases this year.

Measles is highly contagious. The U.S. has experienced a resurgence of the illness that’s fueled by outbreaks in unvaccinated communities.