A medical worker prepares a dose of China's Sinovac COVID-19 vaccine at the Sabiha Uzun Maternal Child Health Center in Ankara, Turkey on Jan. 15, 2021. More than 600,000 health workers in Turkey have received their first doses of COVID-19 shots developed by China's Sinovac during the first two days of the country's vaccination program, Turkish Health Ministry's data showed on Friday. (Photo by Mustafa Kaya/Xinhua)
