Study finds all N95 masks effective for reducing an ill person's danger to others, especially duckbill masks
These results suggest that N95 respirators could be the standard of care in nursinghomes and healthcare settings when respiratory viral infections are prevalent in thecommunity and healthcare-associated transmission risk is elevated.
"All masks and respirators significantly reduced exhaled viral load, without fit tests or training. A duckbill N95 reduced exhaled viral load by 98% (95% CI: 97%–99%), and significantly outperformed a KN95 (p < 0.001) as well as cloth and surgical masks. Cloth masks outperformed a surgical mask (p = 0.027) and the tested KN95 (p = 0.014)."