How to tell if it’s a cold, the flu, COVID-19 or RSV

There’s much to look forward to at the start of winter. The holiday season starts winter off with a bang, while outdoor enthusiasts know their chances to hit the slopes and ski and snowboard are just beginning. Sports fans know January marks the return of the National Football League playoffs, while travelers who need a little winter warmth often designate February as a month to soak up some sun i…