Amanda P. Williams, MD, MPH on X: "Grateful for the strong mask showing at SFO. I'm still #N95 masking in crowded indoor spaces with poor air circulation like this airplane on the
Coronavirus PPE Health & Safety Information|3M United Kingdom
3M™ Aura™ 9320+ FFP2 Respirator Face Mask – Medisave UK
Man with protective 3M medical mask. 3M Aura 9312. The face mask used in the COVID-19 global pandemic as a protection against coronavirus in Bucharest Stock Photo - Alamy