Health officials in Congo and Uganda identified Ebola Bundibugyo in late April, but the WHO emergency declaration came only weeks later, after 105 suspected deaths. A critical four-week detection gap allowed the rare virus to spread unchecked through conflict-affected Ituri province.

Surveillance systems failed partly because ground labs only test for the common Zaire species, missing early cases. Samples collected in April and May finally identified Bundibugyo in Kinshasa. Militia activity and poor infrastructure in mining towns like Mongwalu further hampered contact tracing and timely alerts.

The delayed response, exacerbated by the closure of USAID, leaves health workers without vaccines or proven treatments for this outbreak. With a 50% fatality rate and unsafe burial practices accelerating transmission, containing the virus in a region of displaced populations and porous borders poses a severe regional threat.