Chinese vaccine producer #CanSino's single-dose COVID-19 #vaccine Ad5-nCoV showed 90.98 percent efficacy rate in preventing severe disease, and is effective to prevent 65.7 percent of symptomatic diseases in clinical trials conducted in multiple countries.https://peoplesdaily.pdnews.cn/tech/cansino-vaccine-65-7-effective-against-symptomatic-coronavirus-cases-90-98-against-severe-disease-197219.html …
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