With pos­i­tive PhI­II da­ta, Mer­ck sets up a block­buster at­tempt to over­throw Pfiz­er's reign­ing Pre­vnar 13

Mer­ck is near­ing the end of a years-long ef­fort to de­throne Pfiz­er’s megablock­buster pneu­mo­coc­cal con­ju­gate vac­cine, Pre­vnar 13.

Stray­ing away from its cash cow Keytru­da …

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