Contact Tracing Continues After Measles Case Found In Montgomery Co.

NORRISTOWN, PA — Health officials in Montgomery County are continuing contact tracing efforts with individuals possibly exposed to measles over the past week.

An unknown number of people were exposed after the child who was sickened traveled on a plane and bus and visited two major healthcare centers.

It's not yet clear what flight the infected, unvaccinated child was on at JFK in New York City on Feb. 25. But the child then took a China Airlines airport shuttle bus from Terminal 4 to Pho Ha Saigon in north Philadelphia, before visiting both True North Pediatrics Associates of Plymouth and CHOP's King of Prussia Campus Emergency Department on Feb. 26.

"Additional details regarding possible exposure during and after air travel will be provided as soon as they are available," the Montgomery County Department of Public Health said over the weekend.

The case marks the first measles outbreak in Pennsylvania in 2025. Montgomery County also saw a series of small outbreaks in early 2024, though they were largely contained to Philadelphia.

Dozens of cases have also been reported amongst unvaccinated individuals in recent weeks in West Texas.

Individuals with a measles vaccine, which is more than 90 percent of America, are considered immune. Even in the very rare circumstances they do come down with an infection, symptoms are mild.

Symptoms of measles include cold-like symptoms, runny nose, red eyes, greyish-white spots in the mouth, fever, and more. It's transmitted most commonly through coughing and sneezing.