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Rich countries must donate a billion vaccines by September or risk new COVID-19 variants – Sydney Morning Herald

High-income countries must donate a billion coronavirus vaccines to 92 low and middle-income nations before new virus variants develop, potentially rendering them…

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As nearly 160 million COVID-19 cases have been detected across the world, new variants of the virus have emerged.
Recent clinical trials have found the Pfizer vaccine is about 70 per cent effective in preventing symptomatic cases of the B1.351 variant, also known as the South African variant, although close to 97 per cent effective at preventing serious disease and death.
While larger trial results for the AstraZeneca vaccine are still to be seen, an early, smaller trial found it offered little…

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