Brazil’s health regulator is facing political backlash after suspending final-stage trials of a Chinese-made coronavirus vaccine following an event that scientists involved in the study said was unrelated to the testing.
Late on Monday, Anvisa said that a CoronaVac trial of 9,000 people had been halted due to an “adverse event” on October 29. The trial was carried out jointly with São Paulo’s Butantan Institute, a biomedical research centre.
But on Tuesday the institute questioned why the trial had been halted, saying the event had no relation to the vaccine.
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