Running the numbers: The fourth wave is moving faster than expected

Guest: Ed Tubb, Toronto Star assignment editor focused on COVID-19 data

With rising case counts and other indicators, the fourth wave of COVID-19 is here and just getting started. The Delta variant is more infectious than other forms of the virus and could have a serious impact on our health care systems. Unvaccinated people will bear the brunt of the latest wave, but there are others who are also at risk.