Ebola in the eastern Democratic Republic of Congo is expanding as health authorities struggle to identify and monitor people who may have been exposed. Multiple outlets report that confirmed cases have passed 500, with officials and international agencies warning that contact tracing is not keeping pace with transmission. One report says follow-up with identified contacts in a single day reaches only about one-fifth, while another cites that only just over 70% of contacts are traced at an “appropriate” level—still considered too low to fully control spread.

WHO and other organizations attribute the gap in containment to insecurity, population displacement, and difficulties reaching people and households in conflict-affected areas. Bloomberg reports that patients sometimes escape from care, and testing and tracing delays add to operational challenges. Africa CDC adds that the outbreak’s full scale remains unclear because responders cannot locate missing contacts. Congo’s health minister disputes claims the situation is out of control, while officials race to assess the epidemic’s true footprint as new areas in the province report cases, including zones more than 100 miles from the initial mining town.