Global Snakebite Risk Rising Due to Climate Change and Habitat Loss
Global Snakebite Risk Rising Due to Climate Change and Habitat Loss
US · Published May 22, 2026
A recent study led by the World Health Organization (WHO) highlights an increasing global risk of snakebites as venomous snakes adapt to climate change and habitat loss. Rising temperatures and human encroachment are driving snakes like spitting cobras in Africa, vipers in Europe and South America, cottonmouth moccasins in North America, and kraits in Asia into closer contact with human populations. The study, published in PLOS Neglected Tropical Diseases, mapped the distribution of 508 medically significant snake species and projected their range shifts by 2050 and
While many species face habitat loss, some, including the black mamba and cottonmouth moccasins, are expected to expand into new areas, potentially exposing billions of people to increased risk. The research underscores the need for targeted health interventions and conservation efforts to address these changes.

Why It's Important?

The study warns of heightened snakebite risks, particularly in tropical and densely populated regions. Poor and remote areas, where people often work barefoot and have limited access to healthcare, are especially vulnerable. Wealthier nations, like Australia, have lower mortality rates due to better protective measures and healthcare access. The projected range shifts could bring venomous snakes into areas unaccustomed to such threats, such as cottonmouth moccasins moving as far north as New York and kraits expanding into central and northern China. In India, where snakebites already cause 60,000 deaths annually, the deadliest species are expected to migrate northward, increasing risks in more populated regions.

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