Prognosis

CDC Recommends Double Masking to Help Slow Covid-19 Spread

Study finds double masking, improved fit reduced exposure
CDC previously held off on giving double-masking guidance

The CDC says Americans should wear two masks to prevent the spread of Covid-19.Source: Bloomberg)

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By Emma Court

February 10, 2021 at 4:03 PM UTC

Updated on

February 10, 2021 at 5:00 PM UTC

This article is for subscribers only.

The U.S. Centers for Disease Control and Prevention Wednesday began recommending that Americans wear a cloth mask over a medical mask to slow the spread of Covid-19, along with other options to improve mask fit.

The guidance followed the release of an agency study that found double masking can boost protection from aerosolized particles. Government officials have previously said the CDC was waiting to gather evidence on double masking.