The Philadelphia Department of Public Health announced Monday that travelers who passed through Philadelphia International Airport may have been exposed to measles. The possible exposure occurred in Terminals B and F and in the connecting areas to Terminals C, D and E between 7:25 p.m. on Sunday, Sept. 13, and 12:05 a.m. on Monday, Sept. 14.
Exposure Details and Health Guidance
According to the department’s news release, the exposure was linked to a person with measles who was traveling through the city and remained in the airport for the duration of that time window. The incident is not connected to the recent measles cases reported at the Children’s Hospital of Philadelphia.
Officials are urging anyone who may have been in the affected areas and who is not fully immune, is unsure of vaccination status, is an infant, is pregnant and not immune, or is immunocompromised to contact a health‑care provider promptly. The department noted that post‑exposure prophylaxis may still be available to prevent disease or lessen severity. People who develop fever, cough, runny nose, red eyes or rash are asked to call ahead before visiting a clinic and inform the provider of the possible exposure.
“This week’s measles exposures are a reminder of how important it is for all of us to be up to date on our vaccinations,” City Health Commissioner Palak Raval‑Nelson said. She added that fully vaccinated Philadelphians have little to fear and that vaccination protects the most vulnerable.
Statewide Measles Outbreak Context
Pennsylvania is currently experiencing the nation’s largest measles outbreak of the year, with more than 760 confirmed cases and four measles‑related deaths, the most deaths reported in any state in over three decades. The outbreak is centered in Lancaster County, just outside the Philadelphia region, and is actively spreading in suburban Chester County, while more than half of the state’s 67 counties have reported cases.
Vaccination Importance
The Centers for Disease Control and Prevention states that two doses of the measles, mumps and rubella (MMR) vaccine are about 97 % effective at preventing infection, yet nine out of ten unvaccinated individuals exposed to the virus will become ill. Typical symptoms include high fever, cough, runny nose, watery red eyes and a maculopapular rash, and complications can include pneumonia and brain swelling, with a mortality rate of roughly three deaths per 1,000 infected children.
Public health experts warn that measles, once considered eradicated in the United States, is resurging as vaccination coverage slips; about 95 % of a community needs to be immunized to halt spread. An analysis of school immunization data in the Philadelphia region showed that at least 40 % of kindergarten classrooms were vulnerable to an outbreak last school year, up from 33 % the prior year.
Helene Elliott is the Lead Science & Space Reporter at News Raise. She reports on aerospace missions, astrophysics discoveries, quantum research, and environmental technology.
