How Wildlife Vet Dr. Gladys Kalema-Zikusoka Saved Mountain Gorillas

The infection had migrated from a contaminated scarecrow on the edge of Bwindi Impenetrable National Park into a primate population sharing 98.4% of human DNA, killing one infant and infecting the rest. Treating the sick animals addressed the symptom; the cause ran through the surrounding communities.

Treating humans to protect apes

The 1996 episode catalyzed a strategic pivot: protecting critically endangered great apes required improving the health and livelihoods of the people living alongside them. Scabies, caused by parasitic mites, thrives where hygiene infrastructure is thin — making the link between park-perimeter communities and primate health both predictable and preventable. In 2003, Kalema-Zikusoka founded Conservation Through Public Health, a nonprofit linking veterinary science, public health infrastructure, and local economic development.

Bwindi, home to roughly half of the world's mountain gorillas, sits adjacent to communities that depend on the forest for firewood, charcoal, and subsistence farming. Those activities drive habitat loss; snares intended for other species incidentally maim gorillas. By targeting upstream variables — poverty, hygiene, alternative income — the model addresses root drivers rather than visible damage.

The metrics, and what they imply

The numbers validate the approach. Since 2003, Conservation Through Public Health has engaged more than 50,000 local residents in health and economic initiatives. Over the same period, Uganda's mountain gorilla population has grown by more than 50%, recovering from a baseline of just over 600 individuals when Kalema-Zikusoka first arrived at Bwindi.

That correlation does not imply single-variable causation — anti-poaching patrols, tourism revenue reinvestment, and transboundary cooperation with Rwanda and the Democratic Republic of Congo all contribute. But the integrated model demonstrates conservation outcomes yield measurable returns when human welfare indicators move in parallel with species recovery.

Two signals will indicate whether the framework scales beyond Bwindi. Sustained growth above the current 50% recovery threshold requires continued reductions in snare incidents and disease transmission, both dependent on community engagement rather than perimeter enforcement. Replication across other range states — particularly the DRC, where the largest gorilla subpopulations face acute pressure — will test whether the public-health model travels. The evidence suggests conservation succeeds when it optimizes for human resilience alongside species survival, a principle with growing relevance as habitat fragmentation accelerates across the tropics.