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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."

The UK Health Security Agency (UKHSA) and the Office for National Statistics (ONS) will jointly launch a new study to gather data on COVID-19 this winter. The Winter COVID-19 Infection Study (WCIS) will run from November 2023 to March 2024, involving up to 200,000 participants, UKHSA has said on Monday (October 2). UKHSA previously commissioned the Coronavirus Infection Survey (CIS), conducted by the ONS in collaboration with scientific study leaders from Oxford University, analysing more than 11.5 million swab tests and 3 million blood tests from April 2020 to March 2023. Meanwhile, the Winter CIS study involves conducting up to 32,000 lateral flow tests weekly, providing vital insights into COVID-19 prevalence in the broader community. The sample will be structured to broadly reflect key population characteristics.