Source: Amy McKeever, NATIONAL GEOGRAPHIC, 12/3/21


Danielle Huff was on her treadmill when she first noticed the pain in her chest. She had just recovered from a terrible case of COVID-19 about two or three weeks earlier, during which she’d had just about every symptom imaginable: sore throat, headache, congestion, coughing, loss of smell, body aches, a mild case of pinkeye, and a constant heaviness in her chest like there was a bowling ball weighing it down. But this feeling in her chest was different—it was a sharper pain that came on suddenly. Huff, an Illinois school administrator in her 30s, has a family history of heart issues...

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