America's window of opportunity to beat back Covid-19 is closing:
The good news: The United States has a window of opportunity to beat back Covid-19 before things get much, much worse.
The bad news: That window is rapidly closing. And the country seems unwilling or unable to seize the moment.
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StayAway Covid: após 38 mil casos, foram gerados apenas 730 códigos de infectados : Entre dois milhões de downloads e mais de 38 mil doe...
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The Tricky Math of COVID-19 Herd Immunity : Herd immunity differs from place to place, and many factors influence how it’s calculated.
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The Coronavirus Pandemic Isn’t Over—We Need to Act Accordingly : You might be tired of living this way. But the virus doesn’t care.
