According to the Brazilian health authorities a volunteer died on Wednesday during trials of Astrazeneca and the oxford University. But they have also said that trilas will continue .The statement released by the Oxford University said “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.”