Claiming Covid-19 immunity, it’s full steam ahead for Donald Trump on the campaign trail. Caryn Ceolin with why Trump could still be sick with coronavirus, and why the nation’s top infectious disease expert is calling out the Trump campaign.

Researchers are working around the clock to answer crucial questions about COVID-19, like how the virus spread across Canada and whether those who have had it are now immune. Tina Yazdani with the latest findings.