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The prevalence of Covid-19 infections in England rose to around one in 60 people in the week ending November 27, the Office for National Statistics said today (December 03), led higher by the dominant Delta variant rather than the newly identified Omicron. The prevalence was up from one in 65 reported the previous week, the ONS said, adding that 99 per cent of all coronavirus infections which were sequenced were genetically compatible with the Delta variant. "To date, we have not identified any infections compatible with the new Omicron variant (B.1.1.529) among our survey participants," the ONS said. Prime Minister Boris Johnson has introduced travel restrictions and some mask mandates, with a view to slowing the spread of Omicron while work is undertaken to understand it better. There have been 42 confirmed cases of the variant in Britain, which has mutations consistent with reduced vaccine efficacy.

The Medicines and Healthcare products Regulatory Agency (MHRA) has approved a second "bivalent" vaccine as a Covid-19 booster. The updated booster vaccine made by Pfizer/BioNTech, targeting two coronavirus variants, has been approved for use in individuals aged 12 years and above. In each dose of the booster vaccine, 'Comirnaty bivalent Original/Omicron', half of the vaccine (15 micrograms) targets the original virus strain and the other half (15 micrograms) targets Omicron (BA.1). Dr June Raine, MHRA chief executive said: "I am pleased to announce that we now have a second approved vaccine for the UK Autumn booster programme. The clinical trial of the Pfizer/BioNTech bivalent vaccine showed a strong immune response against the Omicron BA.1 variant as well as the original strain. Bivalent vaccines are helping us to meet the challenge of an ever-evolving virus, to help protect people against Covid-19 variants. We have in place a comprehensive safety surveillance strategy for all UK-approved Covid-19 vaccines, and this will include the updated booster we approved today."

Britain on Monday (January 10) put the biggest private health companies on high alert to deliver crucial treatments such as cancer surgery should Omicron overwhelm National Health Service hospitals in England. The United Kingdom's death toll from the Covid-19 pandemic stands at 150,154, the world's seventh worst official Covid toll after the United States, Brazil, India, Russia, Mexico and Peru. Prime minister Boris Johnson has bet on refraining from lockdowns to deal with the Omicron variant which in recent weeks has swept across the UK, albeit with death rates significantly lower than previous waves. In a sign of just how stretched the NHS could become, health secretary Sajid Javid ordered England's NHS to strike a three-month deal with private health companies to allow patients to get treatments such as cancer surgery outside. "Millions of patients have already got their tests and treatment quicker thanks to our existing deal with independent providers," said David Sloman, NHS England chief operating officer and Covid incident director.