PHILADELPHIA (AP) - State health officials are warning of a possible measles exposure at Philadelphia's Please Touch Museum and a suburban pharmacy.

Officials say a person showing symptoms of the virus visited the hands-on learning museum Monday from 3:30 to 5 p.m.The person was at the CVS Pharmacy in Wayne on Sunday between 5:30 and 8 p.m.Officials say children too young to be vaccinated and people who haven't been vaccinated or received their dose decades ago could be at risk.The disease spreads through droplets expelled in coughs and sneezes.That can happen up to four days before and after a person develops a rash.Measles symptoms include watery eyes, cough and fever up to two weeks after exposure. The rash forms after four days.