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Li Zhiji, a 36-year-old volunteer, receives the recombinant novel coronavirus (COVID-19) vaccine inoculation in Wuhan, Central China's Hubei Province, on March 24, 2020. The first batch of 108 volunteers arrived in Wuhan on Tuesday to receive inoculations after a clinical trial of the novel coronavirus vaccine in China kicked off last Monday. All recipients will be under a 14-day quarantine after vaccination. (Photo/chinadaily.com.cn)
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Wang Li, a 45-year-old volunteer, receives the recombinant novel coronavirus (COVID-19) vaccine inoculation in Wuhan, Central China's Hubei Province, on March 24, 2020. (Photo/chinadaily.com.cn)
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Guo Xin, a 41-year-old volunteer, receives the recombinant novel coronavirus (COVID-19) vaccine inoculation in Wuhan, Central China's Hubei Province, on March 24, 2020. (Photo/chinadaily.com.cn)
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A medical worker extracts the recombinant novel coronavirus (COVID-19) vaccine into a syringe in Wuhan, Central China's Hubei Province, on March 24, 2020.
![](http://www.ecns.cn/hd/2020/03/25/529de13465714a7f9e413594de61f417.jpg)
A medical worker injects the recombinant novel coronavirus (COVID-19) vaccine into a volunteer recipient in Wuhan, Central China's Hubei Province, on March 24, 2020.
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Vials contain the recombinant novel coronavirus (COVID-19) vaccine being tested in Wuhan, Central China's Hubei Province, on March 24, 2020. (Photo/chinadaily.com.cn)