Survivors from Ebola virus disease (EVD) may be at the origin of EVD resurgence. Simultaneous reactivity to at least two EBOV antigens was detected in 11/488 (2.3%, 95% CI 1.1-4.0) suspected EVD patients discharged as negative after two consecutive negative tests during the tenth Ebola outbreak in the DRC. Extrapolating on the total number of individuals discharged as negative during the entire outbreak, suggests a total of 1,314 additional missed Ebola cases. These findings emphasize the usefulness of an EBOV serology analysis and the importance of extending epidemic surveillance to clinical suspected cases discharged as negative.in case of seropositivity.
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