Fi­nal analy­sis of US-fund­ed Mod­er­na Covid vac­cine tri­al shows 98% ef­fi­ca­cy against se­vere dis­ease

A fi­nal look at the re­sults of the place­bo-con­trolled Mod­er­na tri­al in the New Eng­land Jour­nal of Med­i­cine, pub­lished Thurs­day af­ter­noon, shows how the vac­cine con­tin­ues to pre­vent Covid-19 and se­vere cas­es af­ter more than five months fol­low­ing the sec­ond shot.

Of the more than 30,000 en­rolled in the tri­al that ul­ti­mate­ly led to the vac­cine’s EUA, on­ly two peo­ple in the vac­cine group got a se­vere form of the dis­ease, com­pared to 106 in the place­bo group — lead­ing to an ef­fi­ca­cy of 98%.

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