Face shields don't fully protect from "sneeze vortex rings," analysis finds

A group of scientists created a computer model of the airflow around someone wearing a face-shield — one of those see-through plastic visors you attach to your head.

They discovered that if you're wearing a face shield and someone with COVID-19 sneezes in front of you — and towards you — it creates "vortex rings" that carry virus particles up under the bottom of your mask. — Read the rest