February 10, 2021 – Wearing a tight-fitting surgical mask, or doubling on the mask, can significantly reduce COVID-19 transmission and slow the spread of newer, more infectious strains, According to the CDC report released on Wednesday.

Researchers found it That if two people are wearing surgical masks, which are notched and are stuck on the face – or if both have worn cloth masks on top of surgical masks – then the exposure to viral particles is cut by more than 95%.

“The data in this report found that good fit can increase overall mask efficiency,” the authors wrote. “Several simple methods to stay fit have been demonstrated to be effective.”

A “fake To breathe The experiment “shows the surgical mask on its own block 42% COVID-19 particles for the wearer, and the cloth mask blocks about 44% of the particles. Safety for the person wearing the mask by wearing a cloth mask above the surgical mask Increases, blocking 83% of the small particles.

Although other recent studies noted “mask fitters” – a band that goes over a mask that keeps rubbing it in the face – and they found that they have better performance, the CDC said it was the best A surgical mask comes from wearing a fitted surgical mask.

COVID deaths in the US skyrocketed in November and although they declined, they are still high. Officials warn that A. UK-based version It could eventually become a major tension in the US by March.

These findings came amid growing concerns about three new, highly infectious COVID-19s. Variants First identified in Britain, South Africa and Brazil. All three have made their way across the US borders.

Regarding the new coronovirus variants, CDC director Rochelle Wallensky, MD, told reporters at the White House on Wednesday that the agency currently estimates that 1% –4% of COVID cases in the US are caused by the UK version, Also called B117.

On the mask study, Valensky stated that science was already clear that mask requirements could reduce COVID-19 infections and deaths. But, she said, new CDC research “correctly underscores the importance of wearing a mask and ensures that it fits closely to the nose and mouth.”

Wallensky said that any type of mask provides some protection, “and the well-fitted mask provided the greatest performance, both in the emitting aerosol and the receiver exposed to the aerosol.”

Although very few people knew about the safety of the mask Universal epidemic, Increasing research provides clear evidence that they work well. One june The paper In the magazine Physics of fluids Explained that a cough can travel 12 feet within about 50 seconds due to drops. With a properly fitting homemade cotton mask made of several layers, those drops traveled only about 2.5 inches.

One april study in Nature medicine Surgical mask significantly reduces transmission of both cold and flu Drops. One january The paper in Lancet Digital Health Says that mask-wearing growth in a community will more than triple its likelihood of controlling COVID-19 prevalence.

Finally, a CDC study This month released that from March 22 to October 17, 2020, 10 sites in masked mandate states reported a COVID-19 hospital growth rate drop of up to 5.5 percent. Currently, there are more than 40 State and territory With mask mandate.

For proper mask wear, CDC recommendations Incorporat:

  • Choosing a mask that has two or more layers of washable, breathable fabric
  • Apply mask over your nose and mouth and secure it under your chin
  • Knotting the ends of the ear of the surgical mask, where they apply the mask, and then tuck in and flatten off the extra material near the face (knot and tuck masks)
  • Holding the mask completely against the sides of your face, and sliding the loop over your ears or tying the wire behind your head
  • If you have to constantly adjust your mask, it does not fit properly, and you may need to find a different mask type or brand.
  • Wear your mask under your scarf, ski mask, or balaclavaIn the cold season
  • Having an extra mask to replace the wetter
  • Keep wet reusable masks in a plastic bag until they can be washed

Medscape Medical News reporter Ken Terry contributed.

Webmd health news


CDC.gov: “Maximizing Fit SARS-CoV-2 Transmission and Exposure for Clothes and Medical Process Masks to Reduce Performance and Improvement, 2021,” “New Variants of Viruses That Cause Coffee-19”. COVID-19 Hospital Deterioration. Growth Rate Associated with Statewide Mask Mandates – 10 States, March-October 2020, “” How to Wear a Mask. “

USNews.com: “These states have COVID-19 mask mandates.”

Physics of fluids: “Imagining the Effectiveness of Facial Masks Especially in Obstructing the Respiratory Jet.”

Nature medicine: “The breathing virus exhales and sheds the efficacy of a face mask.”

Lancet Digital Health: “Mask-wear and control of SARS-CoV-2 transmission in the United States: a cross-sectional study.”

MedRxiv: “Genomic epidemiology identifies the emergence and rapid transmission of SARS-CoV-2 B.1.1.7 in the United States.”

© 2021 WebMD, LLC. All rights reserved.


Please enter your comment!
Please enter your name here