Excuse me. It was advantageous when we had a shortage. Now that we can get vaccines with no adverse effects like AstraZeneca's and perhaps Johnson & Johnson's, because they have issues associated with them, why continue down that road? Unless we assume we will have a shortage of the Pfizer-BioNTech vaccine.
Since we know we can now roll out the vaccines, I imagine we have no interest in exposing people to thrombosis. We've already had four cases in Quebec.