Analysis highlights the need for a more nuanced approach to COVID-19 vaccine prioritization It's time for a more nuanced approach to vaccine prioritization, as more contagious COVID-19 variants become prevalent and a third wave of infections threatens to overwhelm hospitals in some provinces, according to an analysis published today in the Canadian Medical Association Journal. It's time to move the debate away from age and medical risk factors. The third wave is showing us that the most vulnerable are people in economically marginalized neighbourhoods, Amazon factories and Superstores, where there are a lot of people in close proximity, a group that wasn't prioritized for vaccination before."