Measles exposure reported at LAX, Orange County children’s hospital. Who is at risk?

This undated image made available by the Centers for Disease Control and Prevention in 2015 shows an electron microscope image of a measles virus particle. Health officials warned Thursday that people who were at Los Angeles International Airport and Children’s Hospital of Orange County in recent days may have been exposed to measles. The Los Angeles County Department of Public Health said that people who were at LAX’s Tom Bradley International Terminal — also known as Terminal B — between 12:30 and 6 p.m. that day might be at risk of contracting measles due to exposure to the traveler. Separately, the Orange County Health Care Agency said a measles patient — an infant returning from international travel — visited the Children’s Hospital of Orange County emergency room three times in recent days: On Saturday, between noon and 5 p.m.; on Monday between 2 and 10 p.m.; and on Tuesday between 5:30 and 9 p.m. Infants under 12 months of age who are traveling internationally should get an early vaccination, sometime between 6 and 11 months of age, the Orange County Health Care Agency said.