Third coronavirus vaccine goes into final trial as hopes rise
Researchers worldwide are racing to develop and test a vaccine for the coronavirus
Many coronavirus vaccine have reported promising results in early stage trials
A Chinese-made vaccine against the coronavirus has entered the final stage of testing in Brazil, where volunteers received the first doses. The vaccine, developed by private Chinese pharmaceutical firm Sinovac Biotech, became the third in the world to enter Phase 3 clinical trials, or large-scale testing on humans - the last step before regulatory approval, news agency AFP reported.