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The fast-spreading Omicron variant is now the dominant strain of Covid-19 in the United States, health authorities reported Monday, as the WHO called for greater efforts to ensure the pandemic ends next year.
The new variant has helped fuel record case surges, forcing a return to harsh restrictions in some countries. But in the United States, President Joe Biden does not plan on "locking the country down", White House Press Secretary Jen Psaki said earlier in the day.
The administration will also open multiple federal testing centres starting in New York City ahead of Christmas, a senior administration official said.
More federal sites will be opened across the country in areas of high need and when requested by local and state officials, and some 1,000 military medical personnel will be deployed to support hospitals that are already being overwhelmed in some areas.
Omicron now accounts for 73.2 percent of new US cases over the past week ending Saturday, the Centers for Disease Control and Prevention (CDC) said. In some regions of the country – the Pacific Northwest, South and parts of the Midwest – it already comprises more than 90 percent of new infections.
The White House reported on Saturday that a mid-level, fully vaccinated and boosted staff member had tested positive for Covid-19 after spending 30 minutes in proximity to the president. Biden has so far tested negative.
Early data suggests Omicron could be more infectious and possibly have higher resistance to vaccines, despite indications that it is not more severe than the Delta variant.
Since it was first reported in South Africa in November, Omicron has been identified in dozens of countries, dashing hopes that the worst of the pandemic is over.
WHO Director General Tedros Adhanom Ghebreyesus called for nations to redouble efforts to help end the pandemic, calling for New Year events to be cancelled because it was better to "celebrate later than to celebrate now and grieve later.
"We have to focus now on ending this pandemic," he said.
The European Union approved its fifth Covid-19 jab Monday – from US firm Novavax – with Europe already far ahead of other parts of the world with its rollout of vaccines and booster shots.
Authorisation of the jab, which uses a more conventional technology than other Covid vaccines, has raised hopes that people worried about getting vaccinated might now come forward.
The other vaccines approved in the bloc are from Pfizer, Moderna, AstraZeneca and Johnson & Johnson, and the EU has already signed a deal to buy up to 200 million doses of the two-shot Novavax vaccine.
"At a time where the Omicron variant is rapidly spreading ... I am particularly pleased with today's authorisation of the Novavax vaccine," European Commission chief Ursula von der Leyen said in a statement.
London on Monday announced it had cancelled a New Year's Eve event in the central Trafalgar Square for 6,500 people.
Paris has already cancelled its New Year celebrations, and Germany is expected to roll out tight restrictions on private parties and close nightclubs, according to a proposal seen by AFP.
"New Year's Eve celebrations with a large number of people are unjustifiable in the current situation," reads the draft document.
Morocco has announced a blanket ban on New Year's Eve celebrations.
But British Prime Minister Boris Johnson ruled out any further tightening of England's coronavirus rules over Christmas, while pledging to keep the situation "under constant review".
Queen Elizabeth II is nonetheless understood to have cancelled plans to spend Christmas at her Sandringham estate and will instead take "sensible precautions" and stay at Windsor Castle, according to British media.
The Netherlands has already imposed a Christmas lockdown, and von der Leyen has warned that the Omicron variant could be dominant in Europe by mid-January.
World Economic Forum postponed
As the pandemic gathers pace, weary populations are faced once again with new rounds of restrictions and cancellations of big events.
The World Economic Forum said it was postponing its annual January get-together of the world's rich and powerful in the Swiss ski resort of Davos because of the new variant.
"Despite the meeting's stringent health protocols, the transmissibility of Omicron and its impact on travel and mobility have made deferral necessary," the WEF said Monday.
Israel's health ministry recommended banning nationals from travelling to the United States, and added several European countries to its Covid "red list".
The world of sport continues to be buffeted by the virus spread, with several English Premier League football teams recording outbreaks that forced games to be abandoned in recent days.
However, the Premier League said after a meeting on Monday it had rejected a plan to temporarily halt the season, saying: "It is the League's collective intention to continue the current fixture schedule where safely possible."
Tennis also continues to suffer major blows, with Spanish star Rafael Nadal the latest player to test positive, throwing his participation in next month's Australian Open into doubt.
(FRANCE 24 with AFP and REUTERS)