What led to the new Covid-19 restrictions?

Professor Philip Nolan, chair of the NPHET Irish Epidemiological Modelling Advisory Group, talks us through the reasoning behind the new restrictions in Ireland aimed at preventing community transmission of Covid-19, and what the government means when it says we are a 'critical time' for the country. We're also joined by author of The Journal's coronavirus newsletter Nicky Ryan to talk us through the ins and outs of the restrictions.