A vaccine on the horizon: how optimistic should we be?

This week Pfizer announced positive early results from its coronavirus vaccine trial, but how optimistic should we be about this breakthrough and how will it affect the decisions taken by government in the weeks and months ahead? Joining Hugh and Pat to discuss the latest developments is Irish Times health editor Paul Cullen.<img src="http://feeds.feedburner.com/~r/irish-times-politics/~4/V8lrbYTChC0" height="1" width="1" alt=""/>