John Rossow, Thomas C McHale, James Fuller, Delayo L Zomahoun, Amy Boore, Lauren Erickson-Mamane, Hailey Whitmire, Jaymin C Patel, Dumazedier K Kabasele, Noemi B Hall, Issaka Kabore, Billy Mutombo Mpianga, Katrin S Sadigh, Amy Schuh, Tara Sealy, Erika Meyer, Elissa Meites, Christine Atherstone, Benjamin A Dahl, CDC 2026 Ebola Response 100-Day Reporting Team
The first 100 days after identification of an outbreak are important to understanding transmission dynamics, impact of early public health interventions, and trajectory of potential future cases and deaths. A large Ebola disease outbreak in the Democratic Republic of the Congo (DRC), which has become the country's largest and deadliest, is ongoing. To better understand the current outbreak, this report compared metrics from the first 100 days of this outbreak with those of four past Ebola outbreaks. The historic outbreaks of Ebola disease selected for this comparison include the two largest (the 2014 outbreak in West Africa and a 2018 outbreak in DRC), and the only two previous outbreaks caused by Bundibugyo virus (the 2007 outbreak in Uganda and the 2012 outbreak in DRC). This activity was reviewed by CDC, deemed not research, and conducted consistent with applicable federal law and CDC policy.