PETALING JAYA: The Health Ministry (MOH) has shared effective ways of wearing double face-masks, citing the best practices of America’s Centre for Disease Control (CDC).
Health director-general Tan Sri Dr Noor Hisham Abdullah had on Saturday (May 22) said the wearing of double face masks was encouraged, although it wasn’t mandatory.
On Sunday (May 23), the MOH shared the CDC’s research on the subject, which said that double-masking would substantially reduce exposure to Covid-19.
The CDC recommended double-masking by using a surgical mask on the inside and a cloth mask on the outside.
According to the CDC, this method provides up to 85.4% of protection compared to 56.1% when wearing a single surgical mask.
A cloth mask alone blocks 51.4% of protection, while a knot and tucked surgical mask offers 77% protection.
"While wearing two face masks can make breathing slightly more difficult but generally, the use of a three-ply surgical mask with a cloth face mask can be worn by most users and does not reduce oxygen supply to them," said MOH.
The CDC says that N95 masks are the gold standard and can filter up to 95% of particles, so no doubling of face masks are required.