China's Sinovac coronavirus vaccine due to a "severe adverse event".Anvisa, the country's health regulator, suspended the trials late on Monday saying the event occurred on October 29.The state government of Sao Paulo, where the trial is being run, said the death of a trial volunteer had been registered as suicide and was being investigated.A police report of the incident was seen by Reuters.The news of the trial being suspended has delighted Brazilian President Jair Bolsonaro, who has repeatedly criticised the vaccine's credibility and said it would not be purchased by his government.This suspension further inflamed tensions between Bolsonaro and Sao Paulo Governor Joao Doria, who has pinned his political ambitions on the Chinese vaccine.