WHO warns no herd immunity in 2021; Moderna says vaccine immunity lasts a year https://ift.tt/3nvCGsI https://ift.tt/2Ka4pSe https://ift.tt/2Ka4pSe https://ift.tt/3byOacy

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Submitted January 11, 2021 at 08:25PM by KatieLouiseChurchill https://ift.tt/3byOacy KatieLouiseChurchill