1/ #BetterMasks - why and how

First, why do we even need high-filtration masks right now?

Increasingly, we are going to be (or already are) in crowded, poorly ventilated spaces- groceries, public transit, work, school etc
#covid19

2/ If can agree that we need these...what qualities should these masks have?

We talk about that in our @HarvardBiz piece on #BetterMasks

Fit
Filtration
Comfort
Affordability
Scalability
Style

#covid19

3/ Given huge delays in getting any of this done...what options are available right now, off the shelf?

One of these - elastomeric (eN95s) which are used in different industries and were used by some hospitals can get job done

4/ Many have pointed to the issue of the exhale valves-- actually, even this issue has been studied by CDC/NIOSH, report below

Apparently source control can still be better than surgical masks or cloth masks even w/ these
#covid19

5/ Additionally, many have rightfully mentioned KF94 and KN95s

There have been some issues around counterfeits

CDC has a list of some that have definitely run into these issues (check the list if you have any of these, may need to contact