Trials of China's vaccines
China currently has 13 vaccine candidates in clinical trials, of which three inactivated vaccines and one adenovirus vector vaccine are in phase three trials, said Tian Baoguo, deputy head of the Department of Science and Technology for Social Development of the Ministry of Science and Technology.
And about 60,000 volunteers have been inoculated with the four vaccine candidates.
No severe adverse reaction has been reported among them, and preliminary results show that these vaccines are generally safe and only have minor side effects such as pain and bruising at the injection site, as well as temporary low-grade fever.
Zheng Zhongwei, head of China's COVID-19 vaccine development task force, said the nation's annual COVID-19 vaccine production capacity could reach 610 million doses this year and will expand further next year.