Moderna said its vaccine appears to be 94.5% effective, according to preliminary data. A week ago, Pfizer announced its COVID-19 vaccine appeared similarly effective—which puts both on track to seek permission within weeks for emergency use in the U.S.
Moderna said its vaccine appears to be 94.5% effective, according to preliminary data. A week ago, Pfizer announced its COVID-19 vaccine appeared similarly effective—which puts both on track to seek permission within weeks for emergency use in the U.S.
