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Covid-19: What has the BCG vaccine got to do with it? – Science Weekly Podcast
Sarah Boseley talks to Prof Helen McShane about why there has been interest in the tuberculosis vaccine and whether it could play a role in protecting us against Covid-19. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>