Austria became on Monday the first country in western Europe to reimpose lockdown since vaccines were rolled out, shutting non-essential shops, bars and cafes as surging caseloads raised the prospect of a third winter in deep freeze for the continent.

Germany will also need tighter restrictions to control a record-setting wave of infections, outgoing Chancellor Angela Merkel was quoted as saying, remarks that erased gains on European stock markets and sent bond yields down.

With Europe once again the epicentre of the global pandemic, new restrictions and vaccine mandates are expected to spread nearly two years after the first COVID-19 case was identified in China.

"We are in a highly dramatic situation. What is in place now is not sufficient," Merkel told leaders of her German CDU party in a meeting, according to two participants, confirming comments first reported by Bloomberg.

Austria told people to work from home if they can, and shut cafes, restaurants, bars, theatres and non-essential shops for 10 days. People may leave home for a limited number of reasons, such as going to workplaces, buying essentials or taking a walk.

The Austrian government has also announced it will make it compulsory to get inoculated as of Feb. 1. Many Austrians are sceptical about vaccinations, a view encouraged by the far-right Freedom Party, the third biggest in parliament.

"It's like a luxury prison. It's definitely limited freedom and for me it's not great psychologically," said Sascha Iamkovyi, a 43-year-old entrepreneur in the food sector, describing his return to lockdown on a chilly, overcast day in an unusually quiet Vienna.

"People were promised that if they got vaccinated they would be able to lead a normal life, but now that's not true."

The return of severe government restrictions in Austria had already brought about 40,000 protesters to Vienna's streets on Saturday, and protests turned to violence in Brussels and across the Netherlands over the weekend.

The Czech Republic and Slovakia banned unvaccinated people from services including pubs from Monday.

Around a third of Austrians are unvaccinated, one of the highest rates in western Europe, and authorities mainly blame the unvaccinated for the current COVID wave, though protection from vaccines given early this year is also waning. Inoculation greatly reduces the risk of serious illness or death, and reduces but does not prevent viral transmission or re-infection.

Austria's conservative-led government imposed a lockdown on the unvaccinated last week, but daily infections kept rising far above the previous peak, requiring this week's full lockdown.

In many parts of Germany, including its capital Berlin, Christmas markets opened for the first time in two years on Monday. But states bordering Austria and the Czech Republic that have Germany's highest case numbers have introduced stricter rules, cancelling Christmas markets, barring the unvaccinated from restaurants and bars and imposing curfews at night.

WATER CANNON AND TEAR GAS

Eastern European countries where vaccination rates are even lower have been experiencing some of the highest death tolls per capita in the world, with hospitals becoming overrun in countries such as Bulgaria and Romania.

In cities across the Netherlands, riots broke out as police clashed with mobs of angry youths who set fires and threw rocks to protest at COVID-19 restrictions. More than 100 people were arrested during three nights of violence, which saw police open fire at rioters in Rotterdam on Friday.

Police and protesters clashed in the streets of Brussels on Sunday, with officers firing water cannon and tear gas at demonstrators throwing rocks and smoke bombs.

In France, proof of vaccination or a recent negative test is required to go to restaurants and cinemas. President Emmanuel Macron said last week more lockdowns were not needed.

But violence erupted last week in the French Caribbean overseas region of Guadeloupe amid protests over COVID-19 restrictions such as the mandatory vaccines for health workers.

Police have arrested at least 38 people and dozens of stores have been looted. Macron said on Monday the protests had created a "very explosive" situation.

(Additonal reporting by Jason Hovet and Jan Lopatka; Writing by Nick MacfieEditing by Alison Williams, Mark Heinrich and Peter Graff)