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Tag: double mask

Explainer: N95? KF94? Which mask is best at protecting against COVID-19?

Manojna Maddipatla and Leroy Leo via Reuters -

Are two cloth masks better than one for preventing the spread...

Catherine Clase, Charles-Francois de Lannoy, Juan Jesus Carrero, Roberto Pecoits-Filho, and Scott Laengert via The Conversation -
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