Photos: The 5-year anniversary of the COVID-19 pandemic
On March 11, 2020, the World Health Organization declared COVID-19 a pandemic, the first in over a century. The international ...
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These are the top coronavirus vaccines to watch
It is different from more traditional vaccines, which often use a weakened or dead version of a virus, or a laboratory-generated protein. The core of the coronavirus SARS-CoV-2 is a single strip ...