Epidemiology of snakebites in Kédougou region (eastern Senegal): comparison of various methods for assessment of incidence and mortality

Abstract Background Although considered a public health issue in Senegal, the actual incidence and mortality from snakebite are not known. In the present study, an epidemiological survey was carried out in Kédougou region, southeastern Senegal, where envenomations, particularly by Echisocellatus,...

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Main Authors: Absa Lam, Bouna Camara, Oumar Kane, Amadou Diouf, Jean-Philippe Chippaux
Format: Article
Language:English
Published: SciELO 2016-04-01
Series:Journal of Venomous Animals and Toxins including Tropical Diseases
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992016000100307&lng=en&tlng=en
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author Absa Lam
Bouna Camara
Oumar Kane
Amadou Diouf
Jean-Philippe Chippaux
author_facet Absa Lam
Bouna Camara
Oumar Kane
Amadou Diouf
Jean-Philippe Chippaux
author_sort Absa Lam
collection DOAJ
description Abstract Background Although considered a public health issue in Senegal, the actual incidence and mortality from snakebite are not known. In the present study, an epidemiological survey was carried out in Kédougou region, southeastern Senegal, where envenomations, particularly by Echisocellatus, are frequent and severe. Methods Three sources of data were used: records from health centers and reports by health professionals; traditional healers; and household surveys. Results The annual incidence and mortality provided by health centers were 24.4 envenomations and 0.24 deaths per 100,000 population, respectively. The annual incidence recorded by traditional healers was 250 bites per 100,000 inhabitants, but the number of deaths was unknown. Finally, the household surveys reported an annual incidence of 92.8 bites per 100,000 inhabitants and an annual mortality rate of 2.2 deaths per 100,000 inhabitants. The differences in incidence and mortality between the different methods were explained by significant bias, resulting in particular from the complex patient's healthcare-seeking behavior. The incidence provided by health records should be used to specify the immediate quantitative requirements of antivenoms and places where they should be available first. Conclusion Mandatory reporting of cases would improve the management of envenomation by simplifying epidemiological surveys. Patients' preference for traditional medicine should prompt health authorities to urge traditional healers to refer patients to health centers according to defined clinical criteria (mainly edema and bleeding or neurotoxic symptoms). Finally, household surveys were likely to reflect the actual epidemiological situation. Poison Control Center of Senegal should continue its work to sensitize stakeholders and train health staff.
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spelling doaj.art-a5f80a73d46745da8f8a11db36e1a3c72022-12-21T23:31:47ZengSciELOJournal of Venomous Animals and Toxins including Tropical Diseases1678-91992016-04-0122010.1186/S40409-016-0064-9S1678-91992016000100307Epidemiology of snakebites in Kédougou region (eastern Senegal): comparison of various methods for assessment of incidence and mortalityAbsa LamBouna CamaraOumar KaneAmadou DioufJean-Philippe ChippauxAbstract Background Although considered a public health issue in Senegal, the actual incidence and mortality from snakebite are not known. In the present study, an epidemiological survey was carried out in Kédougou region, southeastern Senegal, where envenomations, particularly by Echisocellatus, are frequent and severe. Methods Three sources of data were used: records from health centers and reports by health professionals; traditional healers; and household surveys. Results The annual incidence and mortality provided by health centers were 24.4 envenomations and 0.24 deaths per 100,000 population, respectively. The annual incidence recorded by traditional healers was 250 bites per 100,000 inhabitants, but the number of deaths was unknown. Finally, the household surveys reported an annual incidence of 92.8 bites per 100,000 inhabitants and an annual mortality rate of 2.2 deaths per 100,000 inhabitants. The differences in incidence and mortality between the different methods were explained by significant bias, resulting in particular from the complex patient's healthcare-seeking behavior. The incidence provided by health records should be used to specify the immediate quantitative requirements of antivenoms and places where they should be available first. Conclusion Mandatory reporting of cases would improve the management of envenomation by simplifying epidemiological surveys. Patients' preference for traditional medicine should prompt health authorities to urge traditional healers to refer patients to health centers according to defined clinical criteria (mainly edema and bleeding or neurotoxic symptoms). Finally, household surveys were likely to reflect the actual epidemiological situation. Poison Control Center of Senegal should continue its work to sensitize stakeholders and train health staff.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992016000100307&lng=en&tlng=enEpidemiologySnakebiteEnvenomationSenegalIncidence
spellingShingle Absa Lam
Bouna Camara
Oumar Kane
Amadou Diouf
Jean-Philippe Chippaux
Epidemiology of snakebites in Kédougou region (eastern Senegal): comparison of various methods for assessment of incidence and mortality
Journal of Venomous Animals and Toxins including Tropical Diseases
Epidemiology
Snakebite
Envenomation
Senegal
Incidence
title Epidemiology of snakebites in Kédougou region (eastern Senegal): comparison of various methods for assessment of incidence and mortality
title_full Epidemiology of snakebites in Kédougou region (eastern Senegal): comparison of various methods for assessment of incidence and mortality
title_fullStr Epidemiology of snakebites in Kédougou region (eastern Senegal): comparison of various methods for assessment of incidence and mortality
title_full_unstemmed Epidemiology of snakebites in Kédougou region (eastern Senegal): comparison of various methods for assessment of incidence and mortality
title_short Epidemiology of snakebites in Kédougou region (eastern Senegal): comparison of various methods for assessment of incidence and mortality
title_sort epidemiology of snakebites in kedougou region eastern senegal comparison of various methods for assessment of incidence and mortality
topic Epidemiology
Snakebite
Envenomation
Senegal
Incidence
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992016000100307&lng=en&tlng=en
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