In Brazil, a volunteer in the trial of the coronavirus vaccine developed by AstraZeneca and the University of Oxford died.
So far it is not known if he had received a placebo or a dose of the vaccine.
Brazilian authorities said that the International Safety and Evaluation Committee, which oversees the trial independently, recommended that it continue.
What do we know so far?
What is the role of the committee?
We discussed it with Dr. Felipe Lobelo, an epidemiologist at Emory University.
