Quebec changes vaccination plan

Does anyone have an opinion whether Quebec is acting wisely or not in the change of plans meaning it won’t hold back doses for booster shots but instead give more people a single dose of the Covid vaccine? Is this decision based on science or on politics?

Additionally: CBC has a piece on how we’ll know when it’s our turn. Canada can’t ordain this, since health care is a provincial matter, but the article has links to provincial health care systems, including Quebec’s. (Read the page now if you prefer to read in English – I imagine this won’t be available for long.)