Jabs, boosters 'vital' against Omicron: EU leaders

European leaders arrive at the last EU Summit of the year

All participants, including presidents, had to show a negative PCR test

EU leaders said on Thursday that vaccinations and booster shots would be vital to counter the Omicron coronavirus variant as countries stepped up restrictions to slow its startling spread.

"From the moment when such and such a variant is present in a country of the EU, it spreads to the others," he said.