Assessments of Chinese-developed Covid-19 vaccines posted by the World Health Organization give a fuller picture of their safety and efficacy. But they also expose limits of the data for older and at-risk groups.
The WHO released the information about Covid-19 vaccines by Sinopharm and Sinovac Biotech as it continues to evaluate the candidates for emergency-use licensing. A decision on whether they will receive the internationally recognised stamp of approval is expected this week.
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