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The Omicron variant of coronavirus is less likely to cause long Covid than previous variants, according to the first peer-reviewed study of its kind from the UK. Researchers at King's College London, using data from nearly 100,000 people who logged their Covid symptoms via an app, found the odds of developing long Covid after infection were 20 per cent to 50 per cent lower during the Omicron wave in the UK compared to Delta. The figure varied depending on the patient's age and the timing of their last vaccination. Long Covid, which includes prolonged symptoms ranging from fatigue to 'brain fog', can be debilitating and continue for weeks or months. It is increasingly being recognised as a public health problem, and researchers have been racing to find out if Omicron presents as big a risk of long Covid as previously dominant variants. The study from King's is believed to be the first academic research to show Omicron does not present as great a risk of long Covid, but that does not mean long Covid patient numbers are dropping, the team said. While the risk of long Covid was lower during Omicron, more people were infected, so the absolute number now suffering is higher. "It's good news, but please don't decommission any of your long Covid services," lead researcher Dr Claire Steves said, appealing to health-service providers.

England won't have any new Covid-19 restrictions before the end of 2021, health secretary Sajid Javid said on Monday (December 27) whilst the government awaits more evidence on whether the NHS can cope with high infection rates in the new year. "There will be no further measures before the new year," Javid told reporters, adding: "When we get into the new year, of course we will see then whether we do need to take any further measures." He said that the highly transmissible Omicron variant of the virus now accounted for around 90 per cent of cases across England and urged people to celebrate New Year cautiously. The government's attention is focused on the number of patients being hospitalised with Omicron after early data last week suggested the variant carried a lower risk of admission. The latest data showed the number of patients in hospital in England with Covid-19 was its highest since March, at 8,474, but a long way off peaks above 34,000 in January. A combination of factors, including Britain's vaccination programme, the lag between infections and hospitalisations and the potentially less harmful effects of the Omicron variant have all been put forward by health experts as possible explanations for lower numbers.

It is not sustainable to give Covid-19 booster shots every three to six in the long term, Britain's chief scientific adviser said on Tuesday (January 4), even though the booster rollout is needed in the short term to combat the Omicron variant. "It would be a situation that isn't tenable to say everyone's going to need to be having another vaccine every three or six months. "That's not the long-term view of where this goes to," Patrick Vallance said at a news conference, adding that annual booster shots against Covid-19 might be necessary, similar to flu shots.

The world has never been in a better position to end the Covid-19 pandemic, the head of the World Health Organization said on September 14, his most optimistic outlook yet on the years-long health crisis which has killed over six million people. "We are not there yet. But the end is in sight," WHO Director-General Tedros Adhanom Ghebreyesus told reporters at a virtual press conference. That was the most upbeat assessment from the UN agency since it declared an international emergency in January 2020 and started describing Covid-19 as a pandemic three months later. The virus, which emerged in China in late 2019, has killed nearly 6.5 million people and infected 606 million, roiling global economies and overwhelming healthcare systems. The rollout of vaccines and therapies have helped to stem deaths and hospitalisations, and the Omicron variant which emerged late last year causes less severe disease. Deaths from Covid-19 last week were the lowest since March 2020, the U.N. agency reported.