Journal of Medical Toxicology

, Volume 3, Issue 4, pp 164–168 | Cite as

Epidemiology of snakebites based on field survey in Chitwan and Nawalparasi districts, Nepal

  • Pandey Deb Prasad 
Toxicology Investigations



Snake envenomation is a major public health issue in the rural tropics, but there is no accurate figure of incidence of snakebite. Few studies have looked at the epidemiology of venomous snakebite in Nepal.


Using data collection sheets, enumerators randomly sampled, visited, and interrogated 20% of the population from each district.


Of the 2,186 snakebite cases studied in two districts from April to September 2005, 66% were from Nawalparasi and 34% from Chitwan. 54% were males. 56% of patients consulted traditional healers. Most bites occurred in those 10–20 years of age and in those engaged in outdoor and agricultural (farmers) activities, but I should note that 15% occurred during sleep. Extremity bites accounted for 94%, with 66% in the lower extremities and 28% in the upper extremities. Of the total cases, 58% were non-envenomations and 42% were envenomations. Of the total venomous cases, 27% died; which is 12% of the total snakebites (2,186). The majority of bites occurred in the summer.


This epidemiological study vividly depicted the health hazards of snakebites in two areas of rural Nepal.


snakebites epidemiology venomous non-venomous mortality morbidity 


  1. 1.
    WHO2005. Blood Products and related Biologicals: Animal sera-Available from animal_sera/enGoogle Scholar
  2. 2.
    Shah KB, Shrestha JM, Thapa CL. Snakebite Management Guideline. HMG, Nepal, Ministry of Health, Department of Health Services, Epidemiology and Disease Control Division, Zoonoses Control Sub-section.2003;3.Google Scholar
  3. 3.
    Ministry of Health, Epidemiology and Disease Control Division. HMG, Nepal. Incidence of Poisonous Snakebite in Nepal. Annual Report.2001;63–71.Google Scholar
  4. 4.
    Snake Bite: Over 100 die yearly in Nepal. The Rising Nepal, Katmandu. Feb. 01,2001. Available from http:// feb01/local.htmGoogle Scholar
  5. 5.
    Bista MB, Banerjee MK, Thakur GD, Shrestha JM., Upadhyay PK, Bhandari R. Annual Report 2002 and 2003. Epidemiology and Disease Control Division. HMG, Ministry of Health,2005;58–64.Google Scholar
  6. 6.
    Devkota UN, Steinmann JP, Shah LN. Snakebite in Nepal; A study from Siraha District, Nepal.J. Nep. Med. Ass. 2000; 39(134):203–209.Google Scholar
  7. 7.
    Devkota UN, Steinmann JP, Kathayat JB. Epidemiology of Snakebite; A study from Choharwa Army Camp, Siraha, Nepal.J. Nep. Med. Ass. 2001;40(138):57–62.Google Scholar
  8. 8.
    Sharma SK, Chappuis F, Jha N, Bovier PA, Loutan L, Koirala S. Impact of Snake Bites and Determinants of Fatal Outcomes in Southeastern Nepal. Am. J. Trop. Med. Hyg.2004;71(2):234–238.PubMedGoogle Scholar
  9. 9.
    Russell FE. Snake-venom Poisoning. Philadelphia, JB Lippincott Company.1980;235–285.Google Scholar
  10. 10.
    Snow RW. The Prevalence and Morbidity of Snakebite and Treatment-seeking Behaviour among a Rural Kenyan Population.Ann. Trop. Med. Parasitol. 1994;88:665–671.PubMedGoogle Scholar
  11. 11.
    Warrel DA. Venoms, Toxins and Poisons of animals and plants. 3rd ed. Vol. 1. In: Oxford Textbook of Medicine; Wealtherall DJ, Ledingham JGG, Warrell DA eds; Oxford University Press, Oxford.1996.Google Scholar
  12. 12.
    Hansdak SG, Lallar KS, Pokharel P, Shyangwa P, Karki P, Koirala SA. Clinicoepidemiological study of snakebite in Nepal.Tropical Doctor 1998;28:223–226.PubMedGoogle Scholar

Copyright information

© American College of Medical Toxicology 2007

Authors and Affiliations

  1. 1.Birendra Multiple CampusTribhuvan UniversityBharatpur, ChitwanNepal
  2. 2.Association for Nature Conservation and Social UpliftmentNepal

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