Oxford COVID-19 vaccine shows promise in early trial

NCT ID NCT04324606

First seen Nov 01, 2025 · Last updated Apr 29, 2026 · Updated 24 times

Summary

This study tested a new COVID-19 vaccine called ChAdOx1 nCoV-19 in over 1,000 healthy adults aged 18-55 in the UK. The goal was to see if the vaccine is safe, triggers an immune response, and prevents symptomatic COVID-19. Participants received the vaccine or a placebo, and researchers tracked side effects and confirmed cases of COVID-19.

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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Contacts and locations

Locations

  • CCVTM, University of Oxford, Churchill Hospital

    Oxford, OX3 7LE, United Kingdom

  • Imperial College Healthcare NHS Trust

    London, W2 1NY, United Kingdom

  • John Radcliffe Hospital

    Oxford, OX3 9DU, United Kingdom

  • St Georges University Hospital NHS Foundation Trust

    London, SW17 0QT, United Kingdom

  • University Hospital Southampton NHS Foundation Trust

    Southampton, Hampshire, SO16 6YD, United Kingdom

  • University Hospitals Bristol and Weston NHS Foundation Trust

    Bristol, BS1 3NU, United Kingdom

Conditions

Explore the condition pages connected to this study.