31 provinces received over 600 million doses of new crown vaccine Zhong Nanshan responded to herd immunity
31 provinces received over 600 million doses of new crown vaccine Zhong Nanshan responded to herd immunity
2021-05-31T23:50:01.805Z
31 provinces received over 600 million doses of new crown vaccine Zhong Nanshan responded to herd immunity
Source: chinanews