He advised that without drastic action, cases could begin to double every five or six days.
“And if you ask, why are we doing this now, why now, why not earlier, or later? Why bring in this very draconian measure?
“The answer is that we are asking people to do something that is difficult and disruptive of their lives.
“And the right moment, as we’ve always said, is to do it when it is most effective, when we think it can make the biggest difference to slowing the spread of the disease, reducing the number of victims, reducing the number of fatalities.”