Reopenings: two masks to protect yourself from Covid

“TWO is better than one” also in terms of masks. The effectiveness of covering the nose and mouth with well-fitting masks to limit the spread of Covid should now be clear to everyone. Now researchers have shown that double masking increases filtering, and therefore protection. Not only that: they have ascertained that the best combo, able to increase the filtering efficiency more, is formed by the surgical mask with the cloth one on top.