With the rise of the worrisome Delta variant, Ontario is accelerating second doses of COVID vaccines in hot spots across the province, as well as shortening the length between doses from 12 to eight weeks for people who got AstraZeneca as their first shot. In addition, some have a choice on their hands as vaccine mixing is also now allowed, including for those who have had AstraZeneca. Yet with mixing and matching, there is also mixed messaging. Today we talk with a professional science communicator about how to handle the infodemic, and everything you need to know about getting a second dose. If you would like to support the journalism of the Toronto Star, you can subscribe at thestar.com/subscribingmatters.