GENEVA, Aug. 6 (Xinhua) -- Six COVID-19 vaccine candidates, including three from China, have entered phase-3 trials, a senior World Health Organization (WHO) official said on Thursday.
The three Chinese candidates are from Sinovac, Wuhan Institute of Biological Products/Sinopharm and Beijing Institute of Biological Products/Sinopharm, said Michael Ryan, executive director of the WHO Health Emergencies Program, at a virtual briefing.
