A decision on whether to impose further Covid restrictions in time for New Year’s Eve is poised on a knife edge after latest figures showed rising hospital admissions in London. A total of 386 Covid-19 admissions were recorded by hospitals in London — up 92 per cent week-on-week and the highest...
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"Among those who received an initial two doses of the AstraZeneca vaccine, protection was about 60 per cent two to four weeks after a Pfizer or Moderna booster. It then dropped to 35 per cent with a Pfizer booster and 45 per cent with Moderna ten weeks after the jab.
Officials stressed that this decline was only seen against mild symptomatic cases. Scientists expect protection against severe disease, which draws on different parts of the immune system, to be significantly higher and long- lasting."
"The latest report, from the UK Health Security Agency (UKHSA), showed that for people who received a first course of Pfizer, vaccine effectiveness was about 70 per cent after a Pfizer booster, dropping to 45 per cent after ten weeks. It stayed at about 70 to 75 per cent after a Moderna booster for up to nine weeks afterwards.
Professor Paul Hunter, an adviser to the World Health Organisation, said annual booster shots were likely for the elderly and vulnerable. "Vaccinating these groups in the autumn, like we do for flu, has real potential," he said. It was less likely that younger groups would need the same top-ups, he said.
The UKHSA also found that people infected with the Omicron variant were between 50 and 70 per cent less likely to be admitted to hospital for at least one night compared with the Delta strain. They were also 45 per cent less likely to visit A&E."
To give an idea of how long boosters give protection against symptomatic disease. Not necessarily severe disease and hospitalisation.