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Date Time Significant reductions in COVID-19 infections found after single dose of Oxford-AstraZeneca and Pfizer-BioNTech vaccine COVID-19 infections fell significantly – by 65% percent – after a first dose of the Oxford-AstraZeneca or Pfizer-BioNTech vaccines in this large community surveillance study. Data from the COVID-19 Infection Survey, a partnership between the University of Oxford, the Office of National Statistics (ONS) and the Department for Health and Social Care (DHSC), is the first to show the impact of vaccination on antibody responses and new infections in a large group of adults from the general population aged 16 years and older. Two studies, released today as pre-prints, focused on the protection from infection provided by COVID-19 vaccines. Researchers analysed 1,610,562 test results from nose and throat swabs taken from 373,402 study participants between 1 December 2020 and 3 April 2021. 21 days after a single dose of either Oxford-AstraZeneca or Pfizer-B

United kingdomMatt hancockKoen pouwelsDavid eyreSarah walkerOffice of national statisticsDepartment for healthUniversity of oxfordBig data instituteOxford universityOxford university nuffield department of population healthNational statisticsSocial careNuffield departmentPopulation healthAssociate professor