California health officials say that N95 and KN95 masks are more effective in protecting people from COVID-19, than surgical and cloth masks. JOHN WALKER jwalker@fresnobee.com What do you want to ...
Once your fever gets better, or if you’re just coughing ... Disposable face masks are less protective than N95 and KN95 respirators for two reasons. Disposable face masks have a looser fit ...
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