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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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The Covid Crisis Is Now a Garbage Disposal Crisis, Too

Across Brazil, recycling plants stopped running for months. In Uganda, a junkyard is short on reusable plastics. And in Indonesia’s capital, disposable gloves and face shields are piling up at a river mouth.

Surging consumption of plastics and packaging during the pandemic has produced mountains of waste. But because fears of Covid-19 have led to work stoppages at recycling facilities, some reusable material has been junked or burned instead.

At the same time, high volumes of personal protective equipment have been misclassified as hazardous, solid waste experts say. That material often isn’t allowed into the normal trash, so a lot of it is dumped in burn pits or as litter.

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