FILE - In this Dec. 23, 2020, file photo released by China's Xinhua News Agency, a Sinovac worker checks the labeling on vials of COVID-19 vaccines on a packaging line in Beijing. With just four of China’s many vaccine makers claiming they are able to produce at least 2.6 billion doses this year, a large part of the world’s population will end up inoculated not with Western vaccines boasting headline-grabbing efficacy rates, but with China’s traditionally made shots. (Zhang Yuwei/Xinhua via AP, File)
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