Authorities are urging indoor masking in major cities as the ‘tripledemic’ rages

(NPR) Public health officials are revisiting the topic of indoor masking, as three highly contagious respiratory viruses take hold during the holiday season. Over the past few weeks, a surge in cases of COVID, the flu and respiratory syncytial virus — known as RSV — has been sickening millions of Americans, overwhelming emergency rooms and even causing a cold medicine shortage. The triple threat has been called a “tripledemic” by some health experts.