Mountain Gorilla Disease Transmission and Welfare

Mountain gorillas share about 98 percent of human DNA and are highly susceptible to human respiratory diseases, making tourism and research proximity a critical welfare issue.

Key Facts

Only around 1,000 mountain gorillas survive in the wild in central Africa
Human respiratory viruses can be lethal to gorillas, who have no immunity to common pathogens
Tourists are required to stay at least 7 metres from gorilla groups during visits
Gorilla groups can contain up to 30 individuals led by a dominant silverback male
Veterinary intervention has saved gorilla lives through treatment of snares and disease
Inbreeding in small populations increases susceptibility to disease
The mountain gorilla is one of few species whose wild population is currently growing

Welfare Considerations

Mountain gorillas face a paradox: the ecotourism that funds their protection also brings disease risk from close human contact. Respiratory outbreaks have caused deaths and significant suffering in habituated groups. Individual gorillas caught in snares set for other animals suffer injuries including limb amputation or death from infection. Social disruption caused by poaching or disease can leave infant gorillas orphaned and traumatized. Even well-managed conservation involves stress from human proximity, helicopter surveys, and veterinary interventions.

What You Can Do

Choose gorilla tourism operators who strictly enforce the 7-metre rule and health protocols
Support organizations like the Dian Fossey Gorilla Fund and Wildlife Conservation Society
Avoid gorilla tourism if you have respiratory symptoms — even a cold can be dangerous
Support anti-poaching initiatives that protect gorilla habitat from snare trapping
Advocate for buffer zones around gorilla national parks to reduce human-wildlife conflict