#SARS-CoV-2
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Health
How the Delta variant spreads so fast
A number of other questions about the Delta variant remain unanswered. It’s still unclear, for instance, whether it is more…
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Health
Is one vaccine dose enough if you’ve had COVID? What the science says
Studies show that people with previous exposure to SARS-CoV-2 tend to mount powerful immune responses to single shots, and gain…
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