Covid-19 roundup: Con­va­les­cent plas­ma flops in UK tri­al; New York Gov. An­drew Cuo­mo seeks to pur­chase vac­cines di­rect­ly from Pfiz­er

The UK’s RE­COV­ERY tri­al is no longer re­cruit­ing pa­tients for the con­va­les­cent plas­ma arm af­ter an in­de­pen­dent da­ta mon­i­tor­ing com­mit­tee found no sig­nif­i­cant im­prove­ment in …

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