COVID-19: Researchers say cloth masks not as effective as medical-grade masks

A study conducted by researchers at University of New South Wales, Sydney showed that cloth masks are t as effective as medical-gre respirators and shouldn't be recommended to healthcare workers. research that was led by Dr. Abrar Chughtai, an epidemiologist, said that according to a study conducted by him and his colleagues in 2015 in Vietnam showed efficacy of cloth mask in comparison to medical-gre masks to be less and that carers who wore former possessed a high risk of contracting disease. 

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study also suggested healthcare workers wear face masks continuously when in shift rar than wearing it at irregular intervals. "Randomised controlled trials in health care workers showed that respirators if worn continually during a shift, were effective but t if worn intermittently. Medical masks were t effective, and cloth masks even less effective. When used by sick patients randomised controlled trials suggested protection of good contacts," study said. A total of 19 randomised controlled trials were included in  study – 8 in community settings, 6 in healthcare settings, and 5 as source control.

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What does CDC say?

United States Centre for Disease Control and Prevention (CDC) h also said that cloth masks are t recommended for healthcare professionals who come in regular contact with sick patients. US CDC in its June 28 report titled 'Considerations for Wearing Cloth Face Coverings' said that those caring for someone who is sick with COVID-19 at home or in a n-healthcare setting may also wear a cloth face covering. However, protective effects—how well cloth face-covering protects healthy people from breathing in virus—are unkwn. 

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