# Double-masking benefits are limited, Japan supercomputer finds | Tech News (HT Tech) > Wearing two masks offers limited benefits in preventing the spread of droplets that could carry the coronavirus compared to one well-fitted disposable mask, according to a Japanese study that modeled the dispersal of droplets on a supercomputer. # Double-masking benefits are limited, Japan supercomputer finds ## Wearing two masks offers limited benefits in preventing the spread of droplets that could carry the coronavirus compared to one well-fitted disposable mask, according to a Japanese study that modeled the dispersal of droplets on a supercomputer. Aug 21 2022, 15:32 IST ![Follow on Facebook](https://images.hindustantimes.com/tech/static/revamp/images/png/follow-us-facebook.png) ![Follow on Facebook](https://images.hindustantimes.com/tech/static/revamp/images/png/follow-us-facebook-hover.png) ![Share](https://images.hindustantimes.com/tech/static/revamp/images/png/Share.png) ![Share](https://images.hindustantimes.com/tech/static/revamp/images/png/Shareclicked.png) ![Share on WhatsApp](https://images.hindustantimes.com/tech/static/revamp/images/png/whatsapp.png) ![Share on WhatsApp](https://images.hindustantimes.com/tech/static/revamp/images/png/whatsapp-hover.png) ![Share on Twitter](https://images.hindustantimes.com/tech/static/revamp/images/png/twitter.png) ![Share on Twitter](https://images.hindustantimes.com/tech/static/revamp/images/png/twitter-hover.png) ![Share on Facebook](https://images.hindustantimes.com/tech/static/revamp/images/png/facebook.png) ![Share on Facebook](https://images.hindustantimes.com/tech/static/revamp/images/png/facebook-hover.png) ![Bookmark](https://images.hindustantimes.com/tech/static/revamp/images/png/Bookmark.png) ![Bookmarked](https://images.hindustantimes.com/tech/static/revamp/images/png/Bookmarked.png) ![FILE PHOTO: A man wears a face mask while waiting at an Apple Store before Apple's 5G new iPhone 12 go on sale, as the coronavirus disease (COVID-19) outbreak continues in Shanghai China October 23, 2020. REUTERS/Aly Song/File Photo](https://images.hindustantimes.com/tech/img/2021/03/05/1600x900/2021-01-28T024948Z_1304789410_RC2QGL9RYCTH_RTRMADP_3_GLOBAL-SMARTPHONES_1614573010705_1614941636964.JPG) FILE PHOTO: A man wears a face mask while waiting at an Apple Store before Apple's 5G new iPhone 12 go on sale, as the coronavirus disease (COVID-19) outbreak continues in Shanghai China October 23, 2020. REUTERS/Aly Song/File Photo (REUTERS) ![Author Photo](https://images.hindustantimes.com/tech/static/revamp/images/png/HTTech-new-circle-logo.png) ### By BLOOMBERG Wearing two masks offers limited benefits in preventing the spread of droplets that could carry the coronavirus compared to one well-fitted disposable mask, according to a Japanese study that modelled the dispersal of droplets on a supercomputer. The US Centers for Disease Control and Prevention recommended double masking in February, saying Americans should wear a cloth mask over a disposable mask, the latest change to its recommendations on face coverings. Also read: Indian scientists reveal new mutations, proteins of novel coronavirus Also read click here. But a similar benefit can be had with just one correctly-fitted mask, according to the research carried out in Japan by the Riken research institute and Kobe University using Fugaku, the world’s fastest supercomputer co-developed with Fujitsu Ltd. “While some improvement can be had to wear a cloth or urethane mask over a loosely-fitted nonwoven mask, there’s not a large difference when compared with one properly-fitted nonwoven mask,” the study said. Wearing two masks offers limited benefits in preventing the spread of droplets that could carry the coronavirus compared to one well-fitted disposable mask, according to a Japanese study that modelled the dispersal of droplets on a supercomputer. The US Centers for Disease Control and Prevention recommended double masking in February, saying Americans should wear a cloth mask over a disposable mask, the latest change to its recommendations on face coverings. Also read: Indian scientists reveal new mutations, proteins of novel coronavirus But a similar benefit can be had with just one correctly-fitted mask, according to the research carried out in Japan by the Riken research institute and Kobe University using Fugaku, the world’s fastest supercomputer co-developed with Fujitsu Ltd. “While some improvement can be had to wear a cloth or urethane mask over a loosely-fitted nonwoven mask, there’s not a large difference when compared with one properly-fitted nonwoven mask,” the study said.|#+| Wearing one tightly-fitted disposable mask prevented the spread of 85% of particles that could carry the virus, while wearing two masks lifted that only to 89%, the simulation found. One regularly fitted mask captured 81% of the droplets, while one loosely fitted mask captured just 69%. However, the study noted that a tight fit and avoiding gaps in the mask was crucial to preventing the spread of droplets. The CDC guidance did note that the goal was to have the second mask push the edges of the inner mask against the face to provide a snug fit. Wearing two nonwoven masks was not recommended, the study said. Don't miss: Apple will soon let you unlock your iPhone with mask on The supercomputer has previously been used to demonstrate what types of mask work best, and model the benefits of ventilation in preventing the spread of the virus. Catch all the Latest Tech News, Mobile News, Laptop News, Gaming news, Wearables News , How To News, also keep up with us on Whatsapp channel,Twitter, Facebook, Google News, and Instagram. 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