American Airlines Flight 755

Passengers and crew on two flights arriving in Philadelphia from Europe on Thursday were screened by medical teams after 12 people aboard became ill with flu-like symptoms, a day after a similar outbreak on a flight from Dubai to New York.

Passengers and crew on two flights arriving in Philadelphia from Europe on Thursday were screened by medical teams after 12 people aboard became ill with flu-like symptoms, a day after a similar outbreak on a flight from Dubai to New York.