Brazil Halts Phase 3 COVID-19 Study

Testing of Sinovac Biotech Ltd.’s COVID-19 vaccine candidate Coronavac has been halted in Brazil due to a serious adverse event reported Bloomberg on November 9, 2020. Brazil's Health Agency indicated the late-stage vaccine study was interrupted in accordance with local regulations.

The CoronaVac vaccine candidate is based on an inactivated pathogen made by growing the whole virus in a lab and then killing it, which is how polio shots are made.