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| U.K. Plans ‘Challenge Trials,’ Which Will Intentionally Give People COVID-19 to Test Vaccines |
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| Rural U.S. Hospitals Are on Life Support as a Third Wave of COVID-19 Strikes |
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| COVID-19 Shutdowns Have Taken a Massive Toll On Elite Athletes’ Mental Health |
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| Why Spicy Food Makes Your Nose Run — and Why It's Great for You |
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| You Asked: Why Is My Scalp So Itchy? |
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