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China’s COVID vaccines have been used wiidely but immunity is now waning

China’s CoronaVac and Sinopharm vaccines account for almost half of the 7.3 billion COVID-19 vaccine doses delivered globally, and have been enormously important in fighting the pandemic, particularly in less wealthy nations.

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Scientists hail historic malaria vaccine approval — but point to challenges ahead

More than 130 years after the naming of the Plasmodium parasites behind malaria, the world now has its first approved vaccine against them. Many malaria researchers have celebrated the development, but others have expressed concerns over the deployment of a vaccine that has only moderate efficacy.

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