Anthrax outbreak kills hippos in DR Congo's Virunga National Park — the park counts 28 dead, Nature reports at least 30
An anthrax outbreak has killed hippopotamuses in Virunga National Park in the eastern Democratic Republic of the Congo (DRC), where carcasses have been found over about a month in the Semuliki River, west of Africa's oldest national park. Following laboratory tests, the park confirmed that anthrax, caused by the bacterium Bacillus anthracis, was responsible. Park officials put the toll at 28 hippos over approximately one month, in the park's statement carried by Al Jazeera; Nature, reporting on 4 November, put the toll at at least 30 in the past month — the two counts are carried side by side on this page and neither is stated as the settled toll. No cases in people had been reported, Nature said, but the park warned the disease can be transmitted to humans through contact with a dead or sick animal or by consuming its meat, and said teams were monitoring the area and handling carcasses safely.
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This story is still being checked. Claims below are published as claims — never dressed as facts — and each one moves only when the evidence earns it.
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Key points
- Laboratory tests confirmed anthrax (Bacillus anthracis) killed the hippos found in the Semuliki River over about a month — the park's own finding.
- The toll differs by count: 28 (park officials, via Al Jazeera) and at least 30 (Nature) — carried as disputed, not merged.
- No human cases had been reported; the park warned people not to touch carcasses or eat the meat, and said teams are disposing of carcasses safely.
- It is a repeat event: 65 hippos died in a 2025 outbreak, against a park census of more than 2,700.
What happened
Virunga, in the DRC's east, is Africa's oldest national park, and the Semuliki River runs along its west. Residents near Vitshumbi, about 100km north of Goma, told Al Jazeera the mass deaths began in mid-September — noticed while the same region is in the midst of the deadliest Ebola outbreak in the country's history, which Vozia covers on its live Ebola story.
Anthrax spores can linger in soil for decades, and the park has been here before: its February 2026 population update recorded 65 hippo deaths in the 2025 outbreak, against a recovering population it estimates at more than 2,700.
Claim by claim
Why this label: Verified on the park's own statement as carried by Al Jazeera (read in full via republications in this run), with Nature's news report in agreement on the lab confirmation, the September start and the Semuliki location. This is the park's confirmed finding, not a field rumour.
On the ladder: a claim earns Verified from primary evidence, or from two independent sources that do not copy each other.
Why this label: Labelled disputed — not because either source is doubted wholesale, but because the counts differ (28 counted by the park when its statement was issued; at least 30 in Nature's later report) and carcass counts in a river system move as teams search. Under replace-don't-stack, the park's next count will replace this claim in place.
On the ladder: credible sources conflict, so we show both workings. One side's own statement is that side's position — never proof.
Why this label: Verified as the park's warning and stated response (its press release sent to Al Jazeera) and Nature's reporting of the human-case position. 'No cases so far' is a position at the time of reporting, not a guarantee, and is worded that way here.
On the ladder: a claim earns Verified from primary evidence, or from two independent sources that do not copy each other.
Show all claims (1 more)
Why this label: Verified across Al Jazeera's report and Nature's account of recurring outbreaks (65 in March 2025 in Nature's dating; the park's update as carried by Al Jazeera gives 65 in 2025). The census figure is the park's own estimate and is labelled as such.
On the ladder: a claim earns Verified from primary evidence, or from two independent sources that do not copy each other.
What we know / what we don't know yet
What we know
- Anthrax is laboratory-confirmed as the cause of the hippo deaths in the Semuliki River.
- Two counts exist — 28 from the park, at least 30 from Nature — and no human cases had been reported at the time of the reports read.
- The park says surveillance and safe carcass handling are under way, and reported no new mortalities in the two weeks before Nature's report.
What we don't know yet
- The final toll, and whether the outbreak has fully ended — the park's next count will replace the disputed claim in place.
- Where the spores came from in this instance — no source read establishes an origin, and none is claimed here.
- Whether any other species have been affected — the reports read concern hippos.
Why it matters
Virunga's hippos are one of conservation's hard-won recoveries, and anthrax is the rare wildlife disease that is also a direct human danger — through river water, carcasses and meat — for the communities living along the Semuliki. The outbreak lands on a region already carrying an Ebola emergency, which is why a wildlife toll belongs on a checked news page, with its count kept honest.
Background
Show the background timeline (4)
An anthrax outbreak kills 65 hippos in Virunga National Park, on the park's February 2026 population update.
The park's census estimates more than 2,700 hippos in 171 groups.
Residents begin noticing mass hippo deaths in the Semuliki River.
The park confirms anthrax by laboratory tests and counts 28 dead (Al Jazeera); Nature reports at least 30 dead and no human cases.
Update history
No silent edits. Every change is written here, with its time.
- Latest
Published in Checking state (crawler #1776 of the 14:17Z crawl, 5 Nov — the highest-scored item in that digest). JUDGE AUDIT: (1) headline, slug, SEO title and summary all carry both counts with their sources and state neither as the settled toll; (2) the cause is Verified on the park's laboratory confirmation, the toll is Disputed between two named counts, and 'no human cases' is worded as a position at reporting time; (3) every number (28, at least 30, 65, 2,700, 171 groups, mid-September) traces to its named source; (4) there is no 'other side' to a disease outbreak — the park's warning and response are carried in its own words; (5) the outbreak's origin is in the don't-know list rather than speculated; (6) photo is a labelled file photo of hippos (not from this outbreak), probed 200; video check made, none verified, none attached; (7) translations added in all 13 languages in the same run (no FR/AR full text to drop).