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Covid vaccine protection decreases over time: US officials

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"Recent data makes clear that protection against mild and moderate disease has decreased over time," US Surgeon General Vivek Murthy says of vaccines against Covid-19 at a White House Covid-19 Response Team briefing, as the US authorizes booster shots for all Americans from September 20 starting eight months after an individual has been fully vaccinated. SOUNDBITE

Added on the 18/08/2021 17:38:51 - Copyright : AFPTV - First images

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