Rich Davis, PhD, D(ABMM), MLS 🦠🔬🧫

2020-06-26 21:32:12

What does a mask do? Blocks respiratory droplets coming from your mouth and throat.

Two simple demos:

First, I sneezed, sang, talked & coughed toward an agar culture plate with or without a mask. Bacteria colonies show where droplets landed. A mask blocks virtually all of them.