CDC's new directive says that wearing a mask could keep you from catching the Coronavirus

by wearing a mask, it blocks out about 60 percent of the amount of virus that comes out of an infected person, the study found.

The Associated Press November 17, 2020 10:07:55 IST
CDC's new directive says that wearing a mask could keep you from catching the Coronavirus

For most people, a cloth mask of at least two layers, which covers the face from the nose to under the chin, is the best option.

US health officials are taking a new tack to encourage Americans to wear masks: They’re emphasizing recent research that a mask protects the person who wears it.

Previously, the Centers for Disease Control and Prevention advised people to wear masks because of evidence that it stops people who are infected with coronavirus — whether they know it or not — from spreading it to others.

But this week the CDC posted a new scientific brief discussing recent studies finding that a wearer gets some protection.

The agency’s guidance didn’t change. It continues to advise Americans to wear masks to stop the virus from spreading.

“But now we’re saying here’s another reason” to do it, said Dr John Brooks, chief medical officer for the CDC’s COVID-19 emergency response.

Agency officials were influenced by a recent study led by Japanese researchers who used mannequin heads and artificial respirators to simulate the spread of coronavirus particles through the air, and assess how well masks blocked transmission.

It confirmed earlier research that masks work best when worn by an infected person who might spread it by coughing, sneezing or talking. Masks block about 60 percent of the amount of virus that comes out of an infected person, the study found.

But the researchers also found there was a benefit when an uninfected person wearing a mask was unlucky enough to be near an infected person who wasn’t wearing one. In that scenario, the amount of virus the uninfected person inhaled fell by 37 percent — to 50 percent — if they wore a mask.

When both people were wearing masks, the decline in virus particles reaching the second person was largest — close to 70 percent.

The study didn’t perfectly mimic most real-world situations. For example, the heads were closer together than six feet, and the exhaling mannequin head was doing more of a constant cough than regular breathing.

But Brooks said the value of everyone wearing masks is suggested by several other studies of real-world situations — including one of customers in a Missouri hair salon, another on a US aircraft carrier, and several others that tracked infections and deaths in places that adopted mask mandates.

Updated Date:

Find latest and upcoming tech gadgets online on Tech2 Gadgets. Get technology news, gadgets reviews & ratings. Popular gadgets including laptop, tablet and mobile specifications, features, prices, comparison.

also read

Pfizer, BioNTech seek emergency use of COVID-19 shots in US, but vaccine still months away, say experts
World

Pfizer, BioNTech seek emergency use of COVID-19 shots in US, but vaccine still months away, say experts

Friday’s filing sets off a chain of events as the US FDA and its independent advisers debate if the shots are ready. If so, still the CDC will have to decide how the initial limited supplies are rationed out to anxiously awaiting Americans

A year since the pandemic: What COVID-19 treatments work, don't work and were big disappointments?
science

A year since the pandemic: What COVID-19 treatments work, don't work and were big disappointments?

Like corticosteroids, anticoagulants are used only in the most severely ill patients where the goal is to prevent blood clots.

A year since the pandemic: Waves of fake news spread misinformation about the COVID-19 vaccine
science

A year since the pandemic: Waves of fake news spread misinformation about the COVID-19 vaccine

Some conspiracy theorists believe that the coronavirus pandemic is a hoax or part of an elite plan, masterminded by the likes of Bill Gates, to control the population.