Cloth masks are still OK to use to protect against the Omicron variant of the coronavirus, so long as they are well-fitted and filter the air properly, the US Centers for Disease Control and Prevention says.
The CDC referred to its existing guidance on mask use in updated recommendations for isolation after a positive Covid-19 test and quarantine after exposure.
It says people should wear masks after testing positive and isolating for five days to protect others, because people may remain infectious for up to 14 days after a positive test.
“Masks are designed to contain your respiratory droplets and particles. They also provide you some protection from particles expelled by others,” the CDC notes in Tuesday’s update.
In a question and answer, the CDC provides links to its guidance suggesting what types of masks work best. Although several medical experts have said in recent days that cloth masks do not provide good protection, the CDC says they can.
“Can I remove my mask in public places after the end of isolation/quarantine? No. After your 5 days of quarantine or isolation end, you should continue to wear a well-fitting mask when around others at home and in public for 5 days. Refer to current CDC guidance for mask wear to determine what to do after the 10-day period is complete. In areas of substantial or high community transmission, masks should continue to be worn in public indoor settings,” the new guidance reads.
All masks should fit snugly so air does not escape around the edges of the mask but is filtered through the material, the CDC said. All masks should have wire to fit the mask tightly across the bridge of the nose. Cloth masks should have multiple layers of fabric, the CDC said.
Using a cloth mask over a disposable surgical style mask can provide good protection, the CDC said. The CDC recommends holding cloth masks up to the light and says that if light shines through, it’s too thin.
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