Abstract
The ongoing Ebola virus disease epidemic (August 2018─October 2019) in the Democratic Republic of the Congo, has been exacerbated by deliberate attacks on healthcare workers despite vaccination efforts. Using a mathematical/statistical modelling framework, we present the quantified effective reproduction number (R(t)) at national and regional levels as at 29 September. The weekly trend in R(t) displays fluctuations while our recent national-level R(t) falls slightly above 1.0 with substantial uncertainty, which suggests improvements in epidemic control.