More than 150,000 cases have been reported in a single day – that is a record number.
Most of the new infections were in the Americas, South Asia and the Middle East.
In Brazil, more than a million coronavirus cases have now been confirmed.
But some experts are warning the true extent of the outbreak there far exceeds the official figures due to a lack of widespread testing.
Nearly 50,000 people have died in the country after contracting Covid-19.
The US is the only other nation to have seen that many patients test positive.
Tedros Adhanom from the WHO says global safety measures are still vital.
Mr Adhanom says: “The world is in a new and dangerous phase. Many people are understandably fed up with being at home.
“Countries are understandably eager to open up their societies and economies.
“But the virus is still spreading fast.”