COVID-19: What you need to know about the pandemic on 22 December: Top stories: EU approves Pfizer/BioNTech vaccine; WHO says no need for major alarm over mutation; President-elect Biden gets vaccine.
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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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Moderna Announces Longer Shelf Life for its COVID-19 Vaccine Candidate at Refrigerated Temperatures : Vaccine candidate now expected to rem...
