WHO says Congo outbreak may be poisoning event as deaths and illnesses mount

# WHO says Congo outbreak may be poisoning event as deaths and illnesses mount

Health officials said the illness cluster in northern Democratic Republic of Congo looked increasingly like a toxic or poisoning incident rather than a new virus.

The World Health Organization said a deadly illness cluster in northern Democratic Republic of Congo increasingly looked like some kind of poisoning event, even as investigators kept testing to determine the exact cause.

CBS News reported that Mike Ryan, the WHO’s head of emergencies, said more than 60 unexplained deaths in the northern part of the country were likely tied to a toxic exposure or poisoning. He said local authorities had told the agency there was a strong suspicion the problem was linked to a water source in the hardest-hit village. Ryan added that the pattern appeared more consistent with a toxic event, whether biologic or chemical, than with a major new virus.

The WHO said it was still investigating another cluster of illness and community deaths in Equateur province. The agency said the most recent cluster occurred in Basankusu health zone, where 141 additional people fell ill in the previous week with no deaths reported. It also said there were earlier cases and deaths in the same zone in February and another smaller cluster in January in Bolamba health zone. The affected areas are about 40 miles apart.

Officials were still working with broad symptom definitions that included fever, chills, headache, nosebleeds, coughing, vomiting, diarrhea, stiff neck and muscle or joint pain. By February 19, the WHO had identified 943 people with those symptoms, including 52 deaths, though the report also said the total deaths under investigation had reached 66 across two locations. Earlier testing had ruled out Ebola and Marburg, but half of the samples had tested positive for malaria.

Investigators were also examining meningitis, food and water sources, and other environmental samples. The report noted the remote terrain, weak infrastructure and strain on Congo’s health system as major barriers to diagnosis and containment. It also said regional teams and WHO epidemiologists had arrived to collect blood, urine and swab samples.

The public-health stakes are complicated by the fact that the signal may not be a novel pathogen at all. If the cluster is tied to poisoning or contamination, the response shifts from virus surveillance to environmental investigation, water testing and exposure tracing. That makes the WHO’s caution especially important: the agency is still acting on a broad clinical picture before it has a final answer.

The packet also points to a fragile response environment. Remote villages, weak roads and stretched health infrastructure make it hard to distinguish between malaria, meningitis, chemical exposure and other causes quickly enough to stop panic or spread. For now, the verified story is not that a deadly new virus has been found, but that investigators are still working through a serious and unusual cluster of illness and death.