Officials around the world reintroduced a raft of restrictions Monday – from beach closures to quarantine measures – to try to damp down coronavirus hotspots as the official death toll passed 650,000.
European countries trying to repair the economic damage caused by the earlier lockdowns, struggled to balance keeping the lifeline of tourism open while guarding against fresh flare-ups of infection.
Spain's tourism industry faced fresh misery after British travellers – and one major tour operator – cancelled flights there following London's decision to reintroduce quarantine for travellers returning from the country.
Hong Kong ordered the mandatory wearing of masks in public in response to a new wave of infections.
The WHO said its emergency committee would meet later this week to discuss the crisis, six months after the organisation declared the pandemic an international public health emergency.
The global death toll from the pandemic passed 650,000 Monday, nearly a third of that number in Europe, according to an AFP tally compiled from official sources at 1600 GMT.
Since emerging in China late last year, the virus has killed a total of 650,011 people – but more than 100,000 deaths have been recorded since July 9, and the global toll has doubled in just over two months.
Now, however, everyone in the densely populated territory must wear masks in public from this week.
"The epidemic situation in Hong Kong is remarkably severe," Chief Secretary Matthew Cheung said as he announced the measure, as well as a ban on more than two people gathering in public and restaurants restricted to serving takeaways meals.
Spain, which has already paid a high cost in human lives and economic losses during the pandemic, suffered a further blow after tour operator TUI cancelled all British holidays to mainland Spain from Monday until August 9.
They were reacting to Britain's decision late Saturday to require travellers returning from the country to quarantine for two weeks.
"There have already been cancellations and more are expected," said Emilio Gallego, secretary general of Spain's hotels association.
"We must prevent returning travellers from infecting others unnoticed and thus triggering new chains of infection," Spahn wrote on Twitter.
Belgium announced that from Wednesday, people there would be allowed to see five people at most outside their family circle, reducing the permitted "social bubble" from 15.
The measures came after the country recorded 1,952 new cases over the past week, more than 70 percent up on the previous week.
France ordered night-time curfews for beaches in the Brittany resort of Quiberon on the Atlantic coast, after a fast-spreading COVID-19 cluster emerged there last week.
Tehran warned Iranians against wedding and funeral gatherings as the coronavirus outbreak showed no signs of abating in the Middle East's hardest hit country.
And Britain launched a campaign against obesity, days after a Public Health England report found that the condition increased the risk of death from coronavirus by 40 percent.
US biotech company Moderna began a final phase of clinical trials for a potential COVID-19 vaccine on Monday -- the same day it emerged President Trump's national security advisory Robert O'Brien had contracted the virus.
O'Brien, the most senior US figure so far to come down with the virus, "has been self-isolating and working from a secure location off site," said a White House statement.