Covid-19 roundup: HHS may strug­gle to ab­sorb Op­er­a­tion Warp Speed; Eu­rope has no plans for a fourth vac­cine dose

Op­er­a­tion Warp Speed, per­haps the great­est achieve­ment of the for­mer Trump ad­min­is­tra­tion, prompt­ly de­liv­ered Covid-19 vac­cine sup­plies na­tion­wide when they be­came avail­able, thanks to col­lab­o­ra­tions …

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