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Racing the virus: Why tweaking the vaccines won’t be simple – Reuters

After developing and rolling out COVID-19 vaccines at record speed, drugmakers are already facing variants of the rapidly-evolving coronavirus that may render them…

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CHICAGO (Reuters) – After developing and rolling out COVID-19 vaccines at record speed, drugmakers are already facing variants of the rapidly-evolving coronavirus that may render them ineffective, a challenge that will require months of research and a massive financial investment, according to disease experts.
FILE PHOTO: A vial of Pfizer/BioNTech coronavirus vaccine is pictured at a vaccination centre inside Harpenden Public Halls, amid the outbreak of the coronavirus disease (COVID-19) in Harpenden,…

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