A study conducted by Japanese research institution Riken, and Kobe University (KU), determined that wearing a single, properly fitted mask hampers viral spread more than wearing two masks.
Led by Makoto Tsubokura, a professor at KU, the research team utilized the Fugaku supercomputer to create a model of virus particle flow from people, while comparing the use of different masks.
The results showed that a non-woven, surgical-type mask that is loosely worn can block 69% of particles, while adjusting it to fit tightly on the nose and face can block 85% of particles. Adding an additional layer of a polyurethane mask, would only increase overall blockage by 4%.
Using two non-woven surgical-type masks, based on the study, is not as helpful due to air resistance build up that would result in leakage around the edges.
The study also indicated that in terms of mask type effectiveness, professional grade N95 masks are still the most effective, followed by non-woven, cloth, and lastly, polyurethane.
Furthermore, an earlier recommendation from the United States’ Centers of Disease Control and Prevention (US CDC) that using two surgical-type masks is more effective, has now been partly contradicted by the study’s findings.
The scientific consensus holds that the virus causing Covid19 is spread via the air, thus making masks essential in preventing further spread of the disease.
As of Mar. 8, the number of cases in the country has reached 597,763.
It will have been one year since the Luzon-wide lockdown first began, on Mar. 15, 2020.