OTTAWA, Canada (AFP) — Canada’s most populous province of Ontario on Tuesday suspended use of the AstraZeneca Covid vaccine as a first dose, citing new data showing increased risks of blood clotting. The move followed the province of Alberta’s announcement to also stop administering the vaccine over possible supply shortages. The two provinces combined represent half the population of Canada. “Effective today, Ontario will be pausing the rollout and administration of first doses of the […]