my country's new crown vaccine is safe and effective

At a press conference held by the State Council's joint prevention and control mechanism on July 23, Feng Zijian, Executive Vice President and Secretary -General of the Chinese Association of Preventi

my country's new crown vaccine is safe and effective

At a press conference held by the State Council's joint prevention and control mechanism on July 23, Feng Zijian, Executive Vice President and Secretary -General of the Chinese Association of Preventi