More than 9,000 people who have coronavirus are now being treated in hospitals across England.
NHS England chief executive Sir Simon Stevens admitted the number is "only going to increase" in his latest update that confirmed a rise of at least 2,800 patients since Friday.
On a visit to the temporary NHS Nightingale hospital being set up in London's ExCel centre, he tried to reassure the public that "mass mobilisation" to create more such buildings will increase the number of patients with coronavirus that can be treated.
"This has been an extraordinary team effort on the part of nurses and doctors and therapists and pharmacists across London, but also volunteers and paramedics and people returning to help," he said on Monday.
"And when these services are needed, they will be available beginning later this week, and because this is a global health emergency we're actually seeing similar types of hospitals being established in Berlin and Madrid and New York."