High-quality masks (N95, KN95) are important to reduce the the risk of infection and transmission by the Omicron family variants. But so is the fit.
Perimeter leakage of face masks and its effect on the mask's efficacy
High-quality masks (N95, KN95) are important to reduce the the risk of infection and transmission by the Omicron family variants. But so is the fit.
Perimeter leakage of face masks and its effect on the mask's efficacy