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The virus spread faster in counties where large universities held classes in person.
One 18-Hour Flight, Four Coronavirus Infections
Los Angeles County memo responds to Covid-19 surge
How Gamaleya’s Sputnik V Vaccine Works
The Covid Balancing Act for Doctors
Second doses have begun for the earliest U.S. vaccine recipients.
Blood Plasma Reduces Risk of Severe Covid-19 if Given Early
Set Your Exercise Goals High, but Not Too High
Why Self-Care Isn’t Selfish – The New York Times
