Moderna says its Covid vaccine is 100 percent effective in teens

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The vaccine manufacturer announced that its COVID-19 vaccine mRNA-1273 is 100% effective in preventing symptomatic infections in 12-17 year olds after two doses

The possibility of children returning to normal life in the U.S. became stronger on Tuesday with vaccine manufacturer Moderna announcing that its COVID-19 vaccine mRNA-1273 is 100% effective in preventing symptomatic infections in 12-17 year olds after two doses. The company said that it would approach the Food and Drug Administration (FDA) to extend the use of its vaccine to this age group, in early June.

Two thirds of 3,732 individuals aged 12-17 received two doses of the vaccine in Moderna’s latest clinical study. None of them developed serious COVID-19 ( equivalent to 100% efficacy) while four developed COVID-19 in the placebo group, the company said. A single dose of the vaccine resulted in 93% efficacy based on the case definition of the Centers for Disease Control and Prevention (CDC), which is modified, given the lower overall rate of infections in adolescents. The teenagers in the study will be monitored for a year after their second dose, the New York Times reported.

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