Is Delta the last Covid ‘super variant’?
The Delta variant was first detected a year ago and is now dominant across the globe. Scientists are concerned that a new strain could supersede it
Every week, a group of epidemiologists across the north-east of the United States joins a Zoom call entirely devoted to discussing the latest hints of new Covid-19 variants being reported around the world.
“It’s like the weather report,” says William Hanage, an epidemiologist at the Harvard TH Chan School of Public Health. “It used to be, ‘We have a little bit of Gamma there, we’ve got Alpha coming up here.’ But now it’s just Delta.”
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