SAO PAULO, AFP July21, 2020 -  Brazil will begin advanced clinical testing of a Chinese-made vaccine against the new coronavirus Tuesday, issuing the first doses to around 900 volunteers, officials said.   

The coronavirus vaccine, developed by private Chinese pharmaceutical firm Sinovac, is the third in the world to enter Phase 3 trials, or large-scale testing on humans -- the last step before regulatory approval.   

It will be administered to doctors and other health workers who volunteer for the program across six states in Brazil, one of the countries hit hardest by the pandemic.    “Trials of CoronaVac, one of the vaccines that has advanced furthest in testing in the world, will begin at the Clinical Hospital of Sao Paulo,” the state’s governor, Joao Doria, told a news conference.   He said initial results were expected within 90 days.