Chinese health official says effectiveness of local coronavirus vaccines is low – ABC News

In a rare admission of the weakness of Chinese coronavirus vaccines, the country’s top disease control official says their effectiveness is low and the government is considering mixing them to give them a boost.
Key points:

• The Chinese Center for Disease Control says locally developed vaccines “don’t have very high protection rates”
• Brazilian researchers found Sinovac’s effectiveness in preventing symptomatic infections was as low as 50.4 per cent
• Experts say mixing vaccines, or sequential immunisation,…

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