Diseases, Conditions, Syndromes

CDC says masks must fit tightly – and two are better than one

On Feb. 10, the Centers for Disease Control and Prevention released new mask guidelines based on a study of how mask fit affects the wearer's exposure to airborne particles. With more transmissible COVID-19 strains emerging ...

Diseases, Conditions, Syndromes

CDC says coronavirus can spread indoors in updated guidance

The top U.S. public health agency said Monday that the coronavirus can spread more than 6 feet through the air, especially in poorly ventilated and enclosed spaces. But agency officials maintained that such spread is uncommon ...

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