Michelle Barron, senior medical director of infection prevention at UC Health [and professor of medicine at CU School of Medicine] in Colorado, said this time of year often brings norovirus outbreaks as well. “People have been talking about the ‘tripledemic’” — referring to covid, flu and RSV, a common virus that usually causes mild, cold-like symptoms — “I’m like no, this is just the season of grossness,” she said.