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Warmer World Means More Snake Encounters
25 May
Summary
- Climate change is predicted to increase snakebite incidents globally.
- Snakes may migrate to populated areas seeking cooler habitats.
- Study estimates 4 million new snakebite cases annually.

Global temperatures are rising, prompting a new study to forecast an increased risk of snakebites across the planet. Researchers from the World Health Organisation predict that snakes may relocate to more densely populated regions or areas previously unaffected by venomous reptiles. This migration is a response to escalating temperatures and human encroachment on natural habitats.
The study forecasts that by 2050 and 2090, warmer weather will likely alter the habitats of numerous venomous snake species. Among those predicted to shift are cottonmouth moccasins in North America, African spitting cobras, South American and European vipers, and Asian kraits. This movement could expose billions to heightened snakebite risks.
However, climate change also presents a severe threat to snake species themselves. Coral snakes in the Amazon, puff adders in Africa, and copperheads in Papua New Guinea face risks from both heat and habitat conversion. Conversely, species like the black mamba are expected to migrate from their current locales to new regions in Africa.
In densely populated areas, increased snake encounters are anticipated in common places like playgrounds and farmlands. India, for instance, may see dangerous snakes like Russell's vipers move from southern to more populated northern regions. This poses a greater danger in poorer, rural areas where access to healthcare is limited.
To address this growing concern, the study aims to help health authorities optimize antivenom distribution and enhance healthcare access in remote communities. It also emphasizes the importance of snake conservation. Experts advise people to remain aware of their surroundings and take preventive measures, such as wearing protective footwear and avoiding contact with snakes.