The rule isn't foolproof, but it should help weed out masks that aren't very protective. The Centers for Disease Control and Prevention recommends multi-layer cloth masks for the general public.

An infectious disease specialist urged persons with comorbidities who will go on vacation to cold countries such as Japan to ...

Wearing a face mask when you’re in a public setting is ... Sharon Nachman, chief of the division of pediatric infectious diseases at Stony Brook Children’s Hospital. Ideally that’s a ...

Face mask mandates appear to be making a quiet comeback ... we are updating our visitation restrictions after consultation with our Infectious Disease and Infection Prevention experts.' ...