The multibillion-dollar world's fair in Dubai has warned that some venues on site may shut down as coronavirus cases rapidly rise in the United Arab Emirates.

Dubai's Expo 2020 said that virus outbreaks among staff may force some parts of the fair to "close temporarily for deep cleaning and sanitization," without elaborating on the scope or the location of the infections.

As omicron spreads ever more gloom around the globe ahead of New Year's Eve, governments are moving at different speeds to contain the scourge, with some reimposing restrictions immediately and others hesitating to spoil the party again.

In Britain, where the highly contagious variant of the coronavirus has sent caseloads soaring to record highs, Health Secretary Sajid Javid said Monday no further restrictions will be introduced in England before the new year. New daily infections in England are hovering around 100,000, and hospital admissions were up more than 70% on Christmas from a week earlier.

Thousands of Belgian performers, cinema operators, event organizers and others have joined together to protest the government's decision to close down the country's cultural life to stem the spread of the surging omicron variant.

Waving posters reading "The show must go on" or "No culture, no future," the crowd demonstrated peacefully despite the pouring rain, accusing the government of unfairly targeting the culture industry with the new virus restrictions.

The latest COVID-19 variant is upending holiday plans for tens of thousands of travelers — but it didn't do much damage to holiday shopping.

Airlines canceled hundreds more flights Sunday, citing staffing problems tied to COVID-19, as the nation's travel woes extended beyond Christmas, with no clear indication when normal schedules would resume.

Delta Air Lines said Monday that new pandemic-related cleaning requirements at a Shanghai airport were behind the turning back of a recent flight from Seattle in midair, a move that had prompted a protest from the Chinese Consulate in San Francisco.

An emailed statement said the new mandates at Shanghai Pudong International Airport "require significantly extended ground time and are not operationally viable for Delta."

Israel has begun trials of a fourth dose of coronavirus vaccine in what is believed to be the first study of its kind.

The trial began at Sheba Medical Center, outside Tel Aviv, with 150 medical personnel who received a booster dose in August receiving a fourth shot of the Pfizer/BioNTech vaccine. The staff receiving the additional dose were tested and found to have low antibody levels.

Christmas arrived around the world Saturday amid a surge in Covid-19 infections that kept many families apart, overwhelmed hospitals and curbed religious observances as the pandemic was poised to stretch into a third year.

From Bethlehem and Frankfurt to London and Boston, the surging coronavirus put a damper on Christmas Eve for a second year, forcing churches to cancel or scale back services and disrupting travel plans and family gatherings.

The biblical town of Bethlehem is gearing up for its second straight Christmas Eve hit by the coronavirus -- with small crowds and gray, gloomy weather dampening celebrations Friday in the traditional birthplace of Jesus.

A ban on nearly all incoming air traffic by Israel -- the main entry point for foreign visitors heading to the occupied West Bank -- kept international tourists away for a second consecutive year. The ban is meant to slow the spread of the highly contagious omicron variant, which has shaken Christmas celebrations around the world.

Nations around the world are lurching into lockdown, steeling themselves for a brutal surge as the omicron variant spreads like wildfire.

But in Dubai, Donna Sese is bracing for a very different surge: countless restaurant bookings and meter-long drink bills.