The Oxford/AstraZeneca COVID-19 vaccine has been approved by the Medicines and Healthcare products Regulatory Agency THE Oxford/AstraZeneca COVID-19 vaccine has been approved by the Medicines and Healthcare products Regulatory Agency (MHRA) following a global trial, in which Welsh participants and healthcare professionals played a key role. A collaboration between Public Health Wales, Aneurin Bevan University Health Board, Health and Care Research Wales, and the Centre for Trials Research at Cardiff University, took part in phase 2/3 of the vaccine trial sponsored by the University of Oxford and funded by CEPI (Coalition for Epidemic Preparedness Innovations) UK Research and Innovation.