The Democratic Republic of Congo’s official Bundibugyo ebolavirus ledger reached 3,442 reported cases and 1,521 deaths, with the government total cut off on July 28, according to the Associated Press. [E1] Most reported illness remains concentrated in Ituri, where disrupted access around Nyakunde has complicated case investigation and care. [E1] The crossing of 1,500 deaths is therefore a real administrative threshold, yet it is an imperfect epidemiological timestamp. A ledger records when cases are accepted into the system as well as when infections occurred, and those two clocks have diverged during this outbreak. [E1][E2]
Reconciliation explains part of the apparent acceleration. Authorities have added older cases and deaths after records from facilities, communities and previously disrupted areas were harmonised, so a large weekly increase can contain infections that happened earlier. [E1][E2] That adjustment does not make the deaths fictional. [E1][E2] It means the reporting curve has jumped as the system caught up with events that the incidence curve had already absorbed. [E1][E2] The disciplined reading is to separate newly detected transmission from retrospectively validated burden, then ask how much of each remains in the latest total. [E1][E2]
The surveillance-catch-up null deserves full weight because WHO had already warned that backlogged records could distort short-term comparisons and that confirmed spread extended beyond the core Ituri zone. [E2] A worsening-outbreak interpretation would be weakened if successive weekly reports showed falling symptom-onset counts, fewer community deaths, shrinking geographic spread and improved contact completion after backlog effects were removed. [E1][E2][E4] It would be falsified more strongly by several reporting cycles in which newly occurring cases declined across affected provinces while reconciliation additions accounted for most ledger growth. [E1][E2] Those tests require onset-dated data rather than a single cumulative headline. [E1][E2]
That null still does not close the outbreak. UNICEF reported that 82.6% of 812 registered contacts completed the full 21-day follow-up, below the 95% target, leaving a material fraction without complete observation. [E4] WHO continues to identify community deaths, weak follow-up and transmission beyond the initial concentration as control risks. [E2] Conflict, displacement, access constraints and mistrust make missing contacts harder to recover and can delay care until illness is advanced. [E1][E2][E4] In that setting, surveillance reconciliation may reveal old transmission while the same institutional weaknesses continue to generate new transmission. [E1][E2][E4]
Facilities are another live exception clause. WHO’s July 30 account from Bunia describes gaps in infection prevention, patient flow, sanitation and health-worker practice, all of which can turn ordinary care settings into points of amplification. [E3] The practical rule is stricter than announcing that treatment capacity exists. Suspected patients must be separated early, staff must have usable protective procedures, contaminated movement through facilities must be controlled, and water and sanitation systems must work continuously. [E3] Where those conditions fail, a hospital can register cases while also helping create them. [E3]
Oxford’s July 24 announcement marks a scientific threshold of a different kind: the first volunteer received ChAdOx1 BDBV in the first Phase I trial of a Bundibugyo ebolavirus vaccine, and roughly 620,000 candidate doses are stockpiled for possible future work. [E5] Phase I tests safety and immunogenicity in a limited trial population. [E5] It is not field deployment, emergency licensure or proof of protective effectiveness in affected communities. [E5] The stockpile is therefore an option contingent on trial results, regulatory decisions, logistics and a deployment protocol. [E5] Counting doses before those gates are crossed would convert inventory into policy by assertion. [E5]
The official ledger now establishes scale while leaving trajectory unresolved. [E1][E2] A cumulative record can grow while current transmission falls, and it can also conceal continuing spread when reporting remains incomplete. [E1][E2] The latest jump may include older burden, while the true burden may still exceed the official count where deaths, contacts and facilities escape complete reporting. [E1][E2][E4] The next decisive evidence is operational: onset-dated incidence after reconciliation, full follow-up moving toward the 95% target, fewer community deaths, tighter facility infection control and no sustained provincial expansion. [E2][E3][E4] Until those conditions persist across several reporting cycles, the threshold for declaring control has not been met.