TORONTO – Due to the increased transmissibility of the Delta B.1.617.2 variant, now dominant in Ontario and much of the world, the percentage of the population that needs to be vaccinated to reach a point where the long-term spread of the virus slows down, now exceeds the number of people medically entitled to vaccination. “The critical threshold for vaccination should be at least 90% of the Ontario population and more than 100% of the vaccine-eligible population,” says Public Health Ontario.  (more…)