Connecticut

googles and masks must be worn and said teachers should all wear face shields.

https://elemental.medium.com/the-most-likely-way-youll-get-infected-with-covid-19-30430384e5a5
https://www.democraticunderground.com/1016269589

New study on Covid: Surfaces vs Airborne:
Instead of obsessing over objects and surfaces, scientists now say the biggest infection risk comes from inhaling what someone else is exhaling, whether it’s a tiny aerosol or a larger droplet. And while a virus traveling through the air sounds terrifying, the good news is there is a safe, cheap, and effective way to stop the spread: wearing a mask. Here are the three primary pathways of transmission, and what experts know about them six months in. It turns out that despite the catastrophic harm it’s caused, the novel coronavirus is actually quite fragile, and it doesn’t like being out in the open where it can dry up. According to the NEJM paper, the virus’s half-life is a relatively short six hours, meaning that every six hours 50% of the virus shrivels up and becomes inactive or noninfectious.