Coronavirus: US urges face masks indoors as Delta variant surges

People vaccinated against Covid-19 in high-risk parts of the United States should resume wearing masks indoors, the top health authority said, a major reversal in guidance that underscored the country’s struggle to suppress the Delta variant.US President Joe Biden said the announcement showed that America needs to “do better” on vaccinations, adding that a vaccine mandate for the country’s more than two million federal workers was now “under consideration”.Centres for Disease Control and…

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