Now there are two: Modern’s mRNA COVID-19 vaccine 94.5% successful, joins Pfizer-BioNTech collaboration in targeting pandemic

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Credit: Photo Illustration by Rafael Henrique/SOPA Images/LightRocket via Getty Images

The Moderna vaccine reduced the risk of Covid-19 infection by 94.5%. There were 95 cases of infection among patients who received placebo in the company’s 30,000-patient study. There were only five infections in patients who developed Covid-19 after receiving Moderna’s vaccine, mRNA-1273.

Moderna also released data about the number of patients who had severe Covid-19. There were 11 cases of severe disease, all of them in the placebo group — … [a] point of encouragement for [Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases].

“There was always the concern … since the primary endpoint [of the trial] is just clinically apparent disease, how do we know it’s going to have an impact on severe disease? And the results with severe disease were striking — 11 to zero is very impressive,” he said. At the time of their data release, Pfizer and BioNTech had no severe cases in their study.

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Further, Fauci said the Moderna vaccine appears to have been protective in important subsets of participants — the elderly and people from racial and ethnic minority groups, the latter of which make up 37% of the Moderna trial population.

The Moderna vaccine is given in two doses, 28 days apart.

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