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Low Efficacy of Chinese Shots Sows Concern on Global Rollout

  • Senior official acknowledged vaccines’ efficacy is ‘not high’
  • Sinovac efficacy rate affirmed at 50%, lower than other shots
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WATCH: Dr. Abraar Karan, physician at the Harvard Medical School, discusses the mounting concerns that China’s Covid-19 vaccines are less effective at quelling the disease. (Source: Bloomberg)
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Concern is mounting that China’s Covid-19 vaccines are less effective at quelling the disease, raising questions about nations from Brazil to Hungary that are depending on the shots and the country’s own mammoth inoculation drive.