More evidence that masks work: Face masks cut the distance that airborne pathogens such as the coronavirus can travel by more than half, researchers report.
are touted as a key tool in preventing the spread of COVID-19, and a new study offers more proof that they work.can travel by more than half.could be relaxed when people wear masks, according to the authors.
"The research provides clear evidence and guidelines that three feet of distancing with face coverings is better than six feet of distancing without face coverings," said study co-author Kareem Ahmed. He's an associate professor in the University of Central Florida department of mechanical and aerospace engineering.
Airborne emissions produced by the participants when they spoke or coughed spread four feet in all directions when they had no mask, compared with about two feet when they wore a cloth face covering and about six inches when they wore a surgical mask, the investigators found.Learning more about how to reduce airborne transmission of infectious diseases can help keep people safe and manage responses to COVID-19 and other pandemics, according to the researchers.
"The principles are the same," Ahmed said in a school news release."Our cough and speech are exhausted propulsion plumes."
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