Thread by @projectn95

Wondering about the different types of #Masks out there? What exactly is a #BetterMask, anyway? Check out this 🧵 for more details w/ our helpful visual guides here!
First up, NIOSH #N95 Masks
-Highest level of protection for disposable #Masks
-@NIOSH_NPPTL approved
-Head Straps

@NIOSH_NPPTL @NIOSH #KF94 / #KN95 #Masks:
-KN95s Manuf. to Chinese GB2626-2019 standard
-KF94s Manuf. to Korean KMOEL 2017-64 standard
-@CDCgov warns: "About 60% of KN95 respirators in the US are counterfeit (fake) & DO NOT meet @NIOSH requirements."
-We verify all KN95s & KF94s we sell are genuine

If you are looking for official US government resources (incl. advice for improving fit, more on Int’l standards, other #masks like #N99, #N100, etc.), see the @CDCgov “Types of Masks @ Respirators” landing page here:
cdc.gov/coronavirus/20…

An excellent thread from @HuffmanLabDU unpacking the changes, going into the details, background, wider context & disc. of #Masks when the @CDCgov made significant updates to the above page & official guidance.
Much discussion continues on some of official Gov. stances therein.

https://twitter.com/HuffmanLabDU/status/1436771934570569734

For even more background, context, history & advice on public health guidance on #Masks, w/ input by experts like @kprather88 & @linseymarr, see our thread w/ selections from @tanyalewis314’s Sept. piece in @sciam:
“Why We Need to Upgrade Our Face Masks - and Where to Get Them.”

https://twitter.com/projectn95/status/1443598028753887239

Next, #Surgical, or #Medical Face #Masks:
- More experts recommending #N95 / #KN95 #masks instead of these, since #COVIDisAirborne
- Looser fit vs. #KN95s
- Only use masks w/ @ASTMIntl standard Level 1, 2 or 3
- Oft. imitated by cheap knockoffs (@US_FDA logo on box telltale sign)