Health officials warn of measles exposure at Philadelphia International Airport

Key Points:

• Health officials announced a new measles exposure at Philadelphia International Airport between the evening of Sept. 13 and early Sept. 14, involving terminals B and F and adjacent areas, marking the second recent exposure in the city.
• The infected individual remained within the airport and did not leave, prompting health authorities to urge travelers present during the exposure who are unvaccinated, infants, pregnant, or immunocompromised to contact a healthcare provider immediately.
• This airport exposure follows a recent measles exposure at the Children’s Hospital of Philadelphia on Sept. 11, highlighting ongoing transmission risks in the region.
• Pennsylvania has reported 792 measles cases this year, including 155 hospitalizations and four deaths, amid declining MMR vaccination rates among children, which have dropped from 95.2% in 2019-2020 to 92.4% in 2025-2026.
• Health officials emphasize the importance of staying up to date with the two-dose MMR vaccine to protect individuals and the community, especially vulnerable populations, from the highly contagious and potentially severe measles virus.