Thanx...
looks like HHS noted the limited supplies on 02/07/2020, then on 03/24/2020 noted that that circumstance exists justifying the authorization of emergency use.
FDA finally gives EUA on 08/5/2020...with manufacturing waivers.
https://www.fda.gov/media/140894/download
https://www.fda.gov/media/140895/download
seems we were wearing masks before 08/2020???
Earlier, FDA gave EUA to “respirators”...
https://www.fda.gov/media/135763/download