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Variants of SARS-CoV-2

People wearing face masks to curb the spread of COVID-19 walk in downtown Lisbon

A COVID variant of concern or just another ‘scare-iant?’

COVID-19

There have been hundreds and thousands variants of COVID-19. Emma Hodcroft, an epidemiologist at the University of Bern in Switzerland, explained to The World’s host Carol Hills when a variant actually becomes a variant of concern.

A lab assistant looks at an assay plate to prepare sequencing at the Wellcome Sanger Institute that is operated by Genome Research in Cambridge, Thursday, March 4, 2021.

From Congo to Chile, small labs are playing a growing role in global understanding of COVID

COVID-19
A health worker inoculates a woman at a COVID-19 vaccination point for priority elderly persons in the Ceilandia neighborhood, on the outskirts of Brasilia, Brazil, March 22, 2021.

Brazil saw its first COVID-19 death a year ago. Today the death toll nears 300,000.

COVID-19
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