n95 masks block few if any covid 19 particles due to their size
n95 masks block few if any covid 19 particles due to their size
president trump will host two large gatherings this weekend in washington, d.c. and at mount rushmore with masks not being required, @craigmelvin asks u.s. @surgeon_general jerome adams whether he would advise people to attend large gatherings like these. https://t.co/5ofim1edcz