Ebola vaccine cuts death risk for people with past infections

Ervebo, Merck's Ebola vaccine, reduced the fatality risk among patients who previously contracted the rare disease that kills 50% of those affected, according to new research

In a review of more than 2,000 people with confirmed Ebola cases in the Democratic Republic of Congo, researchers found case fatality was 27% among Ervebo patients and 56% among unvaccinated patients. The findings were published Feb. 7 in The Lancet Infectious Diseases.

The study is the first to research the retrospective efficacy of the Ebola vaccine, the researchers said.

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