Brazil halts COVID-19 vaccine trial after volunteer has ‘severe adverse event

Brazil has halted trials of a Chinese-developed COVID-19 vaccine after a volunteer experienced a “severe adverse event,” according to a report.

The suspension of the Chinese drugmaker Sinovac Biotech’s CoronaVac was reported in a note from Brazil’s National Health Surveillance Agency, which said trials will be suspended following the Oct. 29 incident, CNN reported.

“With the study interrupted, no new volunteers can be vaccinated,” the note, published by CNN Brasil late Monday, reads.