Variant

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Here's why some states are fighting the CDC's recommendation that those in areas of high transmission, regardless of their vaccination status, return to wearing a mask. ...
A unique combination of mutations has led to this more infectious version of the coronavirus, prompting revised mask guidelines. ...
The Centers for Disease Control have put out a new report outlining new warnings and risks as the delta variant of Covid-19 continues to spread. NBC's Shannon Pettypiece reports from the White House. ...
Centers for Disease Control and Prevention (CDC) Director Rochelle Walensky admitted on Wednesday that the Delta variant of the coronavirus isn't making children any sicker. | Clips ...

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