Governments around the world continue to communicate about R0, also known as “reproductive number” or “R number. “
This is a measure that many countries use to make decisions about locks, what restrictions are maintained, and which are lifted.
But what exactly is the R number and why is it important?
BBC correspondent Laura Foster explains what governments are aiming for and why it is important.
Video via Terry Saunders, Laura Foster and Tobias Chapple