An engineer shows an experimental vaccine for the COVID-19 coronavirus that was tested at the Quality Control Laboratory at the Sinovac Biotech facilities in Beijing (Getty Images)
Covid-19 roundup: Sinovac pulls back from a promised PhIII data reveal, raising questions about efficacy
After promising to reveal the data on a pivotal trial for Sinovac’s Covid-19 vaccine in Brazil, the authorities involved hit the pause button on the …
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