What do you want to know
- The CDC advises against using face masks with valves or vents
- Experts say valves / vents allow the virus to escape the mask
- Officials say tightly woven fabric masks are ideal
The CDC still encourages people to wear masks to prevent the spread of COVID-19, but health officials say they should not have valves or vents that may allow the virus to escape the mask.
On its website, the public health agency stated, “Masks with one-way valves or vents allow the expelled air to drain out through holes in the material.”
Gavin McGregor-Skinner, a public health specialist at Penn, said, “It has to be a really tight-knit fabric. Bedsheets make ideal facial masks, because they can be cleaned. And the knitted stuff is really stiff. So then Nothing like this happens. ” state University.
McGregor-Skinner said the material would not make a good mask because it “saved the respiratory drops.”
Public health officials say that top-of-the-line N-95 surgical masks should not be worn by members of the public and should be reserved for front-line health workers.
Along with other preventive measures, such as social disturbances and frequent hand washing, the CDC states that cloth face masks help reduce the spread of COVID-19, especially in public places.