Italy and Spain record highest single-day death tolls. German citizens could be confined to their homes from Monday if people do not act responsibly
Over 11,000 patients have died from the Covid-19 respiratory illness worldwide.
Nearly 250,000 patients have tested positive overall.
The WHO chief's remarks follow reports that young people in many countries are being complacent about health warnings, because of the greater susceptibility to the virus among older patients.
The coronavirus outbreak was first recorded in China in December. But now the centre of the pandemic is Europe.
Italy and Spain have both reported their biggest single-day death tolls from the coronavirus as Germany’s 83 million citizens were warned they would be confined to their homes on Monday if they fail to behave responsibly this weekend.
As Europe’s governments ramp up already draconian restrictions to curb the coronavirus, authorities in Rome on Friday announced 5,986 new cases and a record 627 new deaths, raising the totals to 47,021 infections and 4,032 fatalities.
In Spain, the death toll rose to 1,002, a highest-ever increase of 235 in 24 hours. The latest statistics showed 19,980 confirmed cases across the country, more than a third in Madrid. Army specialists are to help disinfect care homes after the virus claimed more than 50 lives at elderly care facilities across the region.