WHO updates their recommendations to advise masking by "anyone in a crowded, enclosed, or poorly ventilated space" regardless of local epidemiological conditions in light of its global spread.
#COVID #BringBackMasks
https://www.who.int/news/item/13-01-2023-who-updates-covid-19-guidelines-on-masks--treatments-and-patient-care
WHO updates COVID-19 guidelines on masks, treatments and patient care

The update is part of a continuous process of reviewing such materials, working with guideline development groups composed of independent, international experts.

@rchusid Now we just need @WHO to mention #N95, #N99, #P100, #FFP2, #FFP3, #P3, #KF94, and/or #KN95 #elastomeric #respirators -- the ones which *work* -- rather than just vaguely saying "masks".

Cloth & surgical junk masks are 30% effective -- better than nothing.

#N95 and reusable #P100 #elastomeric #respirators are >95% effective -- MUCH better. And they're cheap enough.

@neroden @rchusid
My favorite @masknerd quote:
“Cloth masks are better than nothing… but they’re a lot closer to ‘nothing’ than ‘better.’”

@neroden @rchusid @masknerd @swhunter7

Worth noting too, that the range of ‘things’ that fall under ‘cloth mask’ is very wide, from multilayered, well made and fitted masks with quality fabrics to a single layer gaiter pulled over the face.

@DavidM_yeg @neroden @rchusid @masknerd
I recall, in the time before the general public could access medical-grade masks, that some cloth masks made from certain chiffons that could carry an electrostatic charge were claimed to have filtration efficiencies similar to N95s; but I know of no accessible empirical test that verifies that.

@masknerd @swhunter7 @neroden @rchusid

We made and used cloth masks until the end of 2021. Society’s changing attitudes toward universal masking and the advent of a much more contagious virus caused us to level up to CN95s (canadian earloop) We searched around to find good fits for the face sizes and shapes in our family and so far so good.

@DavidM_yeg @masknerd @swhunter7 @neroden It was with Delta that I ended my last use of surgical masks (for lower risk situations) and went exclusively to KN-95s or better.