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Biden did cautiously note the emergence of the new more highly infectious Delta variant of the coronavirus but asserted that "the good news is that our vaccinations are highly effective." ...

Female sex, number of comorbidities, and acute illness severity were risk factors for long COVID among adults with COVID-19 infection during the pre-Delta variant period.

CIA now favors lab leak theory to explain COVID’s origins. Four in 10 Minnesotans who contracted COVID-19 reported in a new state survey that they struggled with lingering health problems such ...