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US regulators just released detailed data on Johnson & Johnson's coronavirus vaccine.
The announcement closely follows similar news from a rival Pfizer and BioNTech vaccine program, which touted success in the last stage a week ago.
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Moderna Says Its Coronavirus Vaccine Is 94.5% Effective Against Covid-19, a Crucial Victory in the Fight Against the Pandemic
The announcement closely follows similar news from a rival vaccine program by Pfizer and BioNTech, which touted late-stage success a week ago.