The University of Oxford has said a trial of its coronavirus vaccine will continue in Brazil amid reports of the death of a volunteer.
The university is in advanced stages of testing a Covid-19 immunisation being developed with AstraZeneca, with volunteers in countries including Brazil, the UK and the US.
The institution said it has investigated the case but found “no concerns about safety” around the vaccine.
Oxford said in a statement: “All significant medical incidents, whether participants are in the control group or the Covid-19 vaccine group, are independently reviewed.
“Following careful assessment of this case in Brazil, there have been no concerns about safety of the clinical trial and the independent review in addition to the Brazilian regulator have recommended that the trial should continue.”