Mystery illness kills 15 elephants outside national park

By the Editorial Team · Thursday, July 30, 2026

Fifteen elephants, mainly females and calves, have died from a mysterious illness causing partial paralysis in and around Amboseli National Park, Kenya, over the past month. Kenya Wildlife Service is investigating potential environmental toxins and pesticide contamination as the cause, with further tests underway to protect the region’s vital elephant population and its economic reliance on wildlife tourism.

A mysterious illness has resulted in the deaths of 15 elephants, primarily females and their calves, in and around Amboseli National Park in southern Kenya over the past month. The Kenya Wildlife Service (KWS) reported that ten of the elephants showed symptoms of partial paralysis, rendering them unable to stand before dying within a few days. The deaths occurred between June 24 and July 24, mostly on community lands located 10 to 20 miles outside the park, including areas such as the Kimana Sanctuary and Kuku ranch.

Officials discovered some of the elephant carcasses in varying states of decomposition, complicating efforts to determine the exact cause of death. Only one of the deceased was a bull, and the affected elephants appeared to be members of related family groups. KWS spokesperson Duncan Juma noted that this is the largest recorded die-off in Amboseli in decades and that the event has sparked considerable concern within Kenya, where wildlife tourism is a key economic sector.

Samples collected from the affected elephants have undergone preliminary testing at the University of Nairobi, which detected the presence of a "potential toxic substance." However, analysis by a government laboratory reportedly found no evidence of toxins. KWS stated that further investigations are underway, including environmental assessments of water sources and possible contaminants in the areas where the elephants were found. The agency is exploring whether exposure to a common environmental factor could have contributed to the deaths.

Human-wildlife conflict is a known issue in the region, as Amboseli’s surrounding farmlands sometimes lead to interactions between elephants and local communities. Commercial farming operations near the affected areas use pesticides, which may contaminate water supplies. KWS is examining these possible links as part of its investigation.

While the cause of the deaths remains unclear, KWS officials expressed doubts that the illness was contagious, citing the survival of some family members after intervention efforts such as vaccinations and preventive measures. Rangers continuously monitored the herds following the discovery of the initial fatalities.

Amboseli National Park is home to approximately 2,000 elephants, including some of Africa’s last “super tuskers”—large bulls whose tusks can weigh over 45 kilograms (100 pounds). Kenya’s overall elephant population is estimated at around 42,000 animals, having benefited from enhanced conservation efforts such as anti-poaching measures, ranger recruitment, GPS tracking, and remote sensing technologies aimed at protecting the species.

Elephant populations worldwide have faced declines due to poaching and habitat loss, making the monitoring of such mortality events critical for ongoing conservation strategies. Similar episodes elsewhere, such as a large die-off in Botswana’s Okavango Delta in 2020 linked to toxic cyanobacterial blooms, underscore the complex threats confronting elephant populations amid changing environmental conditions.

This article was reported by synthesizing coverage from multiple independent news outlets to present a balanced, unbiased account. Read about our editorial standards. Spotted an error? Let us know.