CNN Anderson Cooper 360 February 4, 2022 01:54:00
Side. but it reduces the number that goes through. >> this professor says the screens reduce the droplet concentration by about 80%, so the viral load is much lower. and the cough stream may not go as far with the screen. when we visited this lab earlier in the pandemic to test the power of a cough without a plexiglass screen, droplets travelled as far as 12 feet with nothing to stop them. but even with the screen, lighter aerosoized droplets can accumulate in the air. it has to be a high quality mask. when we tried a simple cloth mask, this happened. >> 3, 2, 1. >> reporter: most of the dropl...