Seasonal viruses including influenza and respiratory syncytial virus (RSV) have come back with a vengeance, after sparing the public through most of the COVID-19 pandemic. Meanwhile, new COVID subvariants threaten to be the most transmissible seen yet, and appear to be on the rise. This triple-whammy 'tridemic' is straining the healthcare system and many families — especially those with young children who skipped a couple years of viral infection. Today we're joined by Dr. Allison McGeer, an infectious disease specialist and professor at the University of Toronto's Dalla Lana School of Public Health, to figure out when an especially tough sick season will ease up.