Staff members transfer a batch of Sinovac COVID-19 vaccines at the Phnom Penh International Airport in Phnom Penh, capital of Cambodia, May 11, 2021. A plane carrying a third batch of Sinovac COVID-19 vaccine that Cambodia acquired from Chinese biopharmaceutical company arrived in Phnom Penh, capital of Cambodia, on Tuesday. (Photo by Ly Lay/Xinhua)
