A resident receives the second dose of the COVID-19 vaccine at a sports center in Daxing District, Beijing, capital of China, Jan. 23, 2021. Beijing has completed administering the first dose of the jab among specific groups of people with higher infection risks by Jan. 19, and over 1.9 million people in Beijing have received the first dose of COVID-19 vaccine. Starting from Jan. 22, COVID-19 vaccine recipients in Beijing who have received the initial dose will be given the second dose to maximize the effect of the vaccine, an inactivated one. According to work plans, injection of the second vaccine shot among specific groups of people will be completed by Feb. 8. (Xinhua/Peng Ziyang)

A medical worker keeps records of the COVID-19 vaccine recipients at a sports center in Daxing District, Beijing, capital of China, Jan. 23, 2021. Beijing has completed administering the first dose of the jab among specific groups of people with higher infection risks by Jan. 19, and over 1.9 million people in Beijing have received the first dose of COVID-19 vaccine. Starting from Jan. 22, COVID-19 vaccine recipients in Beijing who have received the initial dose will be given the second dose to maximize the effect of the vaccine, an inactivated one. According to work plans, injection of the second vaccine shot among specific groups of people will be completed by Feb. 8. (Xinhua/Peng Ziyang)

A resident receives the second dose of the COVID-19 vaccine at a sports center in Daxing District, Beijing, capital of China, Jan. 23, 2021. Beijing has completed administering the first dose of the jab among specific groups of people with higher infection risks by Jan. 19, and over 1.9 million people in Beijing have received the first dose of COVID-19 vaccine. Starting from Jan. 22, COVID-19 vaccine recipients in Beijing who have received the initial dose will be given the second dose to maximize the effect of the vaccine, an inactivated one. According to work plans, injection of the second vaccine shot among specific groups of people will be completed by Feb. 8. (Xinhua/Peng Ziyang)

A resident receives the second dose of the COVID-19 vaccine at a sports center in Daxing District, Beijing, capital of China, Jan. 23, 2021. Beijing has completed administering the first dose of the jab among specific groups of people with higher infection risks by Jan. 19, and over 1.9 million people in Beijing have received the first dose of COVID-19 vaccine. Starting from Jan. 22, COVID-19 vaccine recipients in Beijing who have received the initial dose will be given the second dose to maximize the effect of the vaccine, an inactivated one. According to work plans, injection of the second vaccine shot among specific groups of people will be completed by Feb. 8. (Xinhua/Peng Ziyang)