>>14373119>Think about all of the other factors in a healthcare environment related to sterilization, air purification, donning procedures, training of employees, quarantines.Yet they're one of the dirtiest environments, so maybe you should be questioning the efficacy of those other practices. Even the image posted here
>>14373075 shows over 50% efficacy for a basic face mask in public use, which is crazy high considering how leaky they are.
