Why is the Delta variant proving to be so tricky

Despite rising vaccination numbers, Canada is contending with a fourth wave of the COVID-19 pandemic, fuelled by the Delta variant. Cases and hospitalizations are rising across the country, as provincial governments look to bring in new measures such as vaccine passports and old measures like masking. National Post health reporter Sharon Kirkey joins Dave to discuss why Delta is proving so tricky, where we need to get to in terms of vaccinations, and what the fall could bring. Background Reading: With the rise of Delta, are vaccines still enough to end the pandemic?