Medical workers work in a COVID-19 testing lab in east China\’s Shanghai, April 15, 2022. Photo: Xinhua
COVID-19 infections in China are at a low epidemic level and no unknown viruses or bacteria have
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Medical workers work in a COVID-19 testing lab in east China\’s Shanghai, April 15, 2022. Photo: Xinhua
COVID-19 infections in China are at a low epidemic level and no unknown viruses or bacteria have