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Varicella zoster virus, also known as human herpesvirus 3, causes chickenpox and shingles. BSIP/Universal Images Group via Getty Images

Shingles can cause severe chronic pain – new research on how exosomes alter neurons offers pathways to treatment

The pain of post-herpetic neuralgia can drive people to the point of suicide. Researchers are getting closer to pinpointing its cause – which may extend to other forms of neuropathy.
A view from a bridge overlooking the Harrowgate neighborhood of North Philadelphia. Robert Nickelsberg/Getty Images

Philadelphia’s failing air quality hits hardest in neighborhoods near industry and highways, where asthma rates soar

Greater Philadelphia earned failing air quality grades. A new study finds higher asthma rates near industry and major roads, especially where green space is scarce.

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