2nd virus vaccine shows overwhelming success in U.S. tests

Moderna said its vaccine appears to be 94.5{7694d17399014051e9f7f6784cdd00d54ac1842544a7b2c264a1d7ae31c84700} effective, according to preliminary data. A week ago, competitor Pfizer announced its own COVID-19 vaccine appeared similarly effective—news that puts both companies on track to seek permission within weeks for emergency use in the U.S.

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