Brazil’s health regulator has suspended the large, late-stage trial of an experimental Covid-19 vaccine by Chinese developer Sinovac following the death of a volunteer, which the company’s local partner said was “unrelated” to the vaccine.In a statement on Monday, national health surveillance agency Anvisa said “a severe adverse event” had occurred on October 29 without further elaboration. “The agency decided to suspend the study to evaluate the data observed so far and judge the risk and…



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