. A fourth Covid-19 shot might be recommended this fall, as officials ‘continually’ look at emerging data « JO LEE MAGAZINE

CNN/As the world approaches the second anniversary of the declaration of the Covid-19 pandemic by the World Health Organization, on March 11, more nations are rolling out — or are discussing the possibility of — fourth doses of coronavirus vaccine for their most vulnerable. In the United States, leading public health officials say they are “very carefully” monitoring if or when fourth doses might be needed.

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