Covid-19 roundup: Pfiz­er to sup­ply US with 200M more vac­cines as UK study finds high­er an­ti­bod­ies in 8-10 week in­ter­vals

The US gov­ern­ment has pur­chased 200 mil­lion more dos­es of the Pfiz­er/BioN­Tech vac­cine, the com­pa­nies an­nounced Fri­day morn­ing.

Pfiz­er and BioN­Tech ex­pect to de­liv­er 110 …

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