* Measles in the US: Philadelphia reports outbreak and travellers through DC airports warned of possible exposure The BMJ
* After measles exposures in Philadelphia region, what you need to know about the virus, symptoms and vaccine CBS News
* Black Doctors COVID Consortium offering free measles vaccines at North Philadelphia health clinic to combat recent outbreak WPVI-TV
* Philadelphia Warns Of Measles Outbreak After Quarantined Kid Sent To Day Care Anyway Yahoo! Voices
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