In Quebec, young adults were hit first by the pandemic

In the first two years of the COVID-19 pandemic in Quebec, through seven waves of outbreaks, SARS-CoV-2 tended to infect young adults first before the rest of the population, a new study shows. That makes them a key demographic to watch as public health officials try to detect new and emerging waves of that and other viruses, say the Université de Montréal researchers behind the study.