Short🧵
1/
So @CDCgov on their “Your Guide to Masks” has a section saying don’t use N95s or surgical masks for the general public bc they are reserved for healthcare workers. That is their reason. They invoke a *shortage of supply* as their main rationale
https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/about-face-coverings.html
2/ On a separate page, they talk about the presumption that most transmission of #covid19 is happening via droplets but in *special circumstances* transmission happens via aerosols as well

What are those?

Enclosed spaces w/ poor ventilation

https://www.cdc.gov/coronavirus/2019-ncov/more/scientific-brief-sars-cov-2.html
3/ In those situations, N95 & other high filtration masks are key. @cdcgov if there’s a supply issue then *fix* it

Bc being in enclosed crowded spaces is not a *special circumstance*

Many Americans find themselves in these situations every single day, from transit to groceries
4/ & in places like #LACounty where 10 people are testing positive *every minute*, these daily circumstances are becoming highly problematic to people that lack adequate protection, esp those who are high risk or live w/ high risk family members. #covid19

We need #BetterMasks https://twitter.com/lapublichealth/status/1349193008671903744
5/ Some responses to the thread have been to just mass produce N95s

Issue is actually making sure general public gets the fit correctly- otherwise protection is compromised

Alternatively could use solutions that fix the fit of existing masks, or masks that have adjustable fit https://twitter.com/abraarkaran/status/1350096255083556866
You can follow @AbraarKaran.
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