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Snakebite Envenomation in Colombia: A Priority Challenge for Public Health

Detailed view of a snake on a log, highlighting its unique pattern and texture.

Snakebite envenomation, caused by the bite of venomous snakes, constitutes an important public health problem in tropical and subtropical regions worldwide. In Colombia, due to its vast biodiversity and the agricultural activities of its population, this event requires strict epidemiological surveillance and timely medical response

1. What is Snakebite Envenomation?

It is defined as the set of signs and symptoms in the body caused by the inoculation of toxins through the bite of a venomous snake. Envenomation can produce local effects (such as necrosis, severe pain, and edema) and systemic manifestations (coagulation disorders, hemorrhage, renal failure, or neuromuscular paralysis), depending on the snake species involved.

In Colombia, these events are mainly classified according to the reptile family involved:

  • Bothropic, crotalic, and lachesic envenomation: Caused by snakes of the Viperidae family (mapaná, rattlesnake, bushmaster). These are the most common and are characterized by their hemotoxic, cytotoxic, and myotoxic pathophysiological activity.
  • Elapid envenomation: Caused by snakes of the Elapidae family (coral snakes). These are less frequent but highly severe due to their neurotoxic effects, which may compromise respiratory function.Se define como el conjunto de signos y síntomas en el organismo causados por la inoculación de toxinas a través de la mordedura de una serpiente venenosa. El envenenamiento puede generar efectos locales (como necrosis, dolor severo y edema) y manifestaciones sistémicas (alteraciones de la coagulación, hemorragias, falla renal o parálisis neuromuscular), dependiendo de la especie de la serpiente.

2. History of the Event in the Public Health Context

In Colombia, snakebite envenomation has been under surveillance since 2004, when the National Institute of Health (INS) incorporated it into the Public Health Surveillance System (Sivigila). This mandatory inclusion enabled the systematic collection of data, facilitating case georeferencing, the identification of vulnerable populations, and the strategic distribution of antivenoms.

3. Epidemiology in Colombia

Due to its geographic location and diverse altitudinal zones, Colombia is home to one of the greatest diversities of snakes in the world. The epidemiology of this event reflects a clear sociodemographic and environmental distribution:

  • Incidence: Thousands of cases are reported annually across the national territory. The regions with the highest notification rates are usually the Orinoquía, the Amazon, the Pacific region, and the Middle Magdalena area.
  • Affected population profile: This event predominantly affects males of working age (between 15 and 49 years old), engaged in agricultural activities (coffee, palm, and cacao growers, as well as harvest workers), in addition to Indigenous and Afro-descendant communities living in dispersed rural areas.
  • Predominant species: The genus Bothrops (particularly Bothrops asper, commonly known as “mapaná x”) is responsible for more than 70% to 80% of snakebite envenomation cases in the country.

4. Prevención y Mitigación del Riesgo

Prevention of snakebite envenomation is based on community education and environmental management, especially in highly endemic areas:

  • Use of physical barriers: Wear high rubber or leather boots and thick pants during fieldwork or while walking along cleared trails.
  • Extension tools: Use sticks or poles to inspect the ground before placing hands into crops, leaf litter, or accumulated vegetation.
  • Household environment control: Keep the surroundings of homes clean and free of debris, stacked firewood, and waste that may attract rodents (the primary food source for snakes).
  • First Aid Training: In the event of a snakebite, the primary measure is immediate transfer to a healthcare facility. The use of tourniquets, incisions, venom suction, or the application of homemade substances should be avoided.

5. Conclusion

Snakebite envenomation in Colombia extends beyond the medical sphere and has become an indicator of socioeconomic and environmental vulnerability in rural settings. The key to mitigating its impact lies in the continuous strengthening of epidemiological surveillance through SIVIGILA, ensuring timely data flow to optimize the availability of polyvalent antivenoms in the most remote areas. Reducing morbidity and mortality from this cause requires maintaining strong coordination between community-based preventive education and the response capacity of local health services

Links of interest

INS Snakebite Envenomation Dashboard: https://app.powerbi.com/view?r=eyJrIjoiMjI2MjAzYjYtMzE5YS00MmM1LTk1ZGEtOTUxYjFiNjlhZjNmIiwidCI6ImE2MmQ2YzdiLTlmNTktNDQ2OS05MzU5LTM1MzcxNDc1OTRiYiIsImMiOjR9

Snakebite Prevention Guide: INFORGRAFÍA ACCIDENTE OFÍDICO.pdf

Author

Gerhard M Acero
ESP epidemiologist
Publication date: 23/06/2026

This entry has not been sponsored