Omicron Is Here. Should You Cancel Your Trip?
David Freedman, the president-elect of the American Society of Tropical Medicine and Hygiene, said that the type of mask one wears while traveling is particularly important. Dr. Freedman discourages people from wearing cloth or homemade masks; N95 or KN95 masks are preferable, he said. Updated Dec. 2, 2021, 8:22 p.m. ET It is difficult to…