Face Masks with Valves, Vents Not Effective For COVID-19 Prevention — CDC

Some people have preferred masks with valves or vents because they make breathing easier, however, U.S Based federal agency, CDC has advised against it.

Mask with valve
A lady wearing a mask with a valve.

The Centers for Disease Control and Prevention (CDC) made this known in their updated guidelines urging Americans to avoid the use of those face masks, as they are not as effective as masks with no valves, in preventing the spread of COVID-19.

The agency said masks with vents protect the wearer but expose many to COVID -19 because of the exhaled unfiltered air that is expelled out through holes.

The guideline read, “The purpose of masks is to keep respiratory droplets from reaching others to aid with source control. Masks with one-way valves or vents allow exhaled air to be expelled out through holes in the material. This can allow exhaled respiratory droplets to reach others and potentially spread the COVID-19 virus.”

“Therefore, CDC does not recommend using masks if they have an exhalation valve or vent.”

“Masks with one-way valves or vents allow exhaled air to be expelled out through holes in the material. This can allow exhaled respiratory droplets to reach others and potentially spread the COVID-19 virus. Therefore, CDC does not recommend using masks if they have an exhalation valve or vent.”

According to Fox news, Dr. John Whyte, the chief medical officer of the health care webs, wrote in an email that “Although there is some feeling that any type of mask is better than none, it’s really not that helpful when one isn’t wearing a mask correctly or wearing one that is ineffective, and may not even realize it”.

“These recent guidelines from the CDC are helpful in helping people choose masks”.

“I know everyone wants comfort when wearing a mask. The key for protection is a good seal — thereby keeping as many infectious particles that we can from affecting other people. Sometimes that seal makes our glasses foggy or causes humidity. The problem with the valves is that although it prevents particles from coming in, they allow particles to come out — defeating the purpose of infection control. Masks with vent decrease the effectiveness of the seal,” he wrote.

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Smart Olawale
Smart Olawale is a Journalist (writing for HSENations), Marketing & Communication Enthusiast, Digital Marketer, Speaker and Educationist.
He holds a B.Sc Degree in Mass Communication from the prestigious Olabisi Onabanjo University.
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