The proposal is called the Great Barrington Declaration, and while it's couched in lots of scientific language, herd immunity is what it boils down to. It has support from a group of scientists and is scoffed at by many, many more.

But during a time when Canada's various Covid-19 regulations, thresholds, protocols and half-lockdowns can seem incredibly confusing, the Barrington approach offers a simple answer. Especially as a dark winter looms and it feels easier to just give up. What do we know about herd immunity? Why is it so attractive? And if it's too dangerous to consider, what are our other options to get through the months ahead?

GUEST: Andre Picard, health reporter, The Globe and Mail

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