Masks

 NY Times: Is It Time to Wear a Mask Again? Experts recommend when and how to use them, as Covid continues to circulate. By Dani Blum

Time matters, too: Darting in and out of a packed grocery store is less risky than working all day in a busy office, for example. Ten minutes is a good marker to keep in mind, Dr. Pekosz said. If you’re headed somewhere indoors for longer than that, you may want to put on a mask beforehand.