It's more of a confirmation thing, I think. We've been pretty sure about Covid being airborne since early 2020. This probably helps convince some of the few that insist it isn't.
"Here, we measured outward emissions of micron-scale aerosol particles by healthy humans performing various expiratory activities while wearing different types of medical-grade or homemade masks. Both surgical masks and unvented KN95 respirators, even without fit-testing, reduce the outward particle emission rates by 90% and 74% on average during speaking and coughing, respectively, compared to wearing no mask, corroborating their effectiveness at reducing outward emission."
Clearly you aren’t in the Netherlands, where the authorities only started advocating adequate ventilation a few months ago. Before that washing your hands was more important.
zpeti|4 years ago
They don’t help at all with aerosol transmission.
So basically the entire world is crazy to mandate it unless it’s minimum kn95 or n95 masks.
Many many people don’t want to accept its aerosol transmission because it means it’s much harder to do anything about it.
gnat|4 years ago
"Here, we measured outward emissions of micron-scale aerosol particles by healthy humans performing various expiratory activities while wearing different types of medical-grade or homemade masks. Both surgical masks and unvented KN95 respirators, even without fit-testing, reduce the outward particle emission rates by 90% and 74% on average during speaking and coughing, respectively, compared to wearing no mask, corroborating their effectiveness at reducing outward emission."
tinus_hn|4 years ago