It is recommended that whenever possible, everyone wear a non-vented respirator, such as an N95, KN95, or KF94 respirator, or a well-fitting surgical mask with a cloth mask over it.
Not recommended: a scarf, ski mask, balaclava, bandana, turtleneck, collar, single layer of fabric, or any mask that has an unfiltered one-way exhaust valve.
Further guidance from the CDC on mask recommendations can be found here.
* Policy is subject to change
