China Covid-19 vaccine trial halted in Brazil after serious adverse event

Testing of Sinovac Biotech's vaccine, called Coronavac, has been halted in Brazil after an event that occurred on Oct. 29, Brazil Health Agency said without giving any further detail on what happened

The final-stage trial of a Chinese frontrunner vaccine candidate has been halted in Brazil due to a serious adverse event, the first time that any of the Asian nation’s rapidly developed Covid-19 shots have met with such a setback.

Testing of Sinovac Biotech Ltd.’s vaccine, called Coronavac, has been halted in Brazil after an event that occurred on Oct. 29, said the Brazil Health Agency on Tuesday, without giving any further detail on what happened. The study is interrupted in accordance with regulations while the agency analyses if the study should continue, it said.

Sao Paulo’s Instituto Butantan, which partnered with Sinovac