Delta variant on track to become dominant cause of covid-19 globally


A man crosses the tracks at a tram station in the empty central business district in Sydney

A man at a tram station in the empty central business district of Sydney, Australia, on June 27, the first full day of a two-week lockdown

STEVEN SAPHORE/AFP via Getty Images

The more transmissible delta variant of the coronavirus is on track to become the dominant form globally, experts tell New Scientist. Now detected in at least 85 countries, its spread has triggered new lockdowns and other restrictions across the world.

“I know that globally there is currently a lot of concern about the delta variant, and the World Health Organization is concerned about it …



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