CDC: Double-masking helps reduce exposure to the coronavirus

Wearing a cloth mask over a medical procedure mask significantly helps reduce exposure to Covid-19, according to a new CDC study.

Researchers determined double-masking or wearing tightly fitted medical masks can reduce exposure to infectious aerosols by 95 percent — demonstrating that the better the masks fit, the better protection they provide.

Medical procedure masks don’t always provide robust protection alone because air can leak around their edges, according to the study, which CDC researchers conducted using dummies fitted with different types of masks.

If a medical procedure mask is worn alone, the CDC says modifications to improve the fit, such as knotting the ear loops and tucking in the sides of the mask, or wearing a cloth mask over it, can reduce exposure. Other options include using a “mask fitter” device or a sleeve made of nylon pantyhose to hold the mask tightly to the face, the agency said.

The background: The study is the latest to show evidence that masks can reduce transmission. The CDC last week released a pair of studies, including one that showed masks had helped slow hospitalizations in states that mandated their use.

The new research also comes as a growing number of experts — including Biden’s chief medical adviser, Anthony Fauci — have recommended double-masking to increase protection against Covid-19. The advice has been driven in part by the arrival in the U.S. of coronavirus variants that are more transmissible than earlier versions of the virus.

The Biden administration has urged Americans to wear masks when they are around people who don’t live in their households. The president has used executive orders to mandate masks in federal buildings and on public transportation, and at least a dozen states have imposed their own mask mandates.

What’s next: Biden administration officials are expected to discuss the findings at an 11 a.m. Covid-19 briefing Wednesday.

Source: https://www.politico.com/news/2021/02/10/cdc-coronavirus-double-masking-468319
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The Article Was Written/Published By: Brianna Ehley

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