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Different efficacy data for Chinese COVID-19 vaccine 'real and valid'

 A woman holds a small bottle labeled with a "Coronavirus COVID-19 Vaccine" sticker and a medical syringe in this illustration taken October 30, 2020. [FIle, Dado Ruvic, Reuters]

Different efficacy results for a Chinese COVID-19 vaccine released separately in China and in United Arab Emirates are both real and valid, an executive at China National Biotec Group (CNBG) told state media.

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