Chile's Deputy Health Minister Paula Daza speaks during a press conference after the arrival of the fourth shipment of COVID-19 vaccines developed by Chinese firm Sinovac at the Santiago international airport in Santiago, Chile, Feb. 26, 2021. Representatives of the Chilean government on Friday received a fourth shipment of vaccines from Chinese pharmaceutical firm Sinovac to continue the fight against the COVID-19 pandemic. (Xinhua)

Representatives of the Chilean government welcome the fourth shipment of COVID-19 vaccines developed by Chinese firm Sinovac at the Santiago international airport in Santiago, Chile, Feb. 26, 2021. Representatives of the Chilean government on Friday received a fourth shipment of vaccines from Chinese pharmaceutical firm Sinovac to continue the fight against the COVID-19 pandemic. (Xinhua)

Workers transfer containers with the fourth shipment of COVID-19 vaccines developed by Chinese firm Sinovac at the Santiago international airport in Santiago, Chile, Feb. 26, 2021. Representatives of the Chilean government on Friday received a fourth shipment of vaccines from Chinese pharmaceutical firm Sinovac to continue the fight against the COVID-19 pandemic. (Xinhua)