China’s jabs may have an important role
But there is uncertainty over their efficacy
IN MEDICAL SCIENCE, fortune rarely favours endeavours that begin by skirting phase-three trials—those that test a new drug or vaccine on lots of people in a rigorously controlled way. Yet this is exactly how a number of Chinese covid-19 vaccines arrived in the world last year.
This article appeared in the Science & technology section of the print edition under the headline “Shots in the dark”
From the January 23rd 2021 edition
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