Coronavirus R0: What is the R number and why does it matter? – BBC News

In the daily briefing earlier this week, Prime Minister Boris Johnson said to avoid the "disaster" of a second peak the UK must keep the R rate below one. But what is the R number and why does it matter? BBC health correspondent Laura Foster explains what governments are aiming for and why it matters. Video by Terry Saunders, Laura Foster and Tobias Chapple Please subscribe HERE bit.ly/1rbfUog

Watch the video at BBC News on Coronavirus Outbreak