Volunteers are being sought for a world-first Oxford trial giving a first dose of one vaccine type and a second dose of another.  It will recruit 820 people over the age of 50 to receive a first dose of either the Oxford/AstraZeneca or Pfizer/BioNTech vaccine.

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Thursday briefing: Mix-and-match jab trial ► https://www.theguardian.com/world/2021/feb/04/thursday-briefing-mix-and-match-jab-trial

Covid: Oxford trial to test efficacy of mix of vaccines for individuals ► https://www.theguardian.com/society/2021/feb/04/oxford-trial-to-test-efficacy-of-mix-of-covid-vaccines-for-individuals

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