The World Health Organisation said on Friday that Europe was now the "epicentre" for the global coronavirus pandemic, and warned it was impossible to know when the outbreak would peak, AFP reports.

"Europe has now become the epicentre of the pandemic," WHO chief Tedros Adhanom Ghebreyesus said in a virtual press conference.

He said the continent had now "more reported cases and deaths than the rest of the world combined, apart from China.

"More cases are now being reported every day than were reported in China at the height of its epidemic," he said, referring to the global numbers.

The virus, which first surfaced in China in December, has now killed more than 5,000 people, with cases around the world topping 134,000.

Tedros said the deaths passing the 5,000 mark was "a tragic milestone".

Maria Van Kerkhove, who heads the WHO's emerging diseases unit, said it was not possible to predict how the pandemic will develop.

"It's impossible for us to say when this will peak globally. We hope that it is sooner rather than later."

Their comments came as countries in Europe and around the world put in place dramatic measures to halt the spread of the virus, including closing schools and tightening borders.

Tedros said such measures could help, but stressed that countries needed to take "a comprehensive approach."

"You can't fight a virus if you don't know where it is," he said, calling on countries to "find, isolate, test and treat every case, to break the chains of transmission".

"Every case we find and treat limits the expansion of the disease," he said. "Do not just let this fire burn."

WHO chief Tedros Adhanom Ghebreyesus said it was now impossible to predict when the Covid-19 outbreak would peak. Photo: AP.

Europe becomes the epicenter of Covid-19 pandemic, WHO says