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Evaluation of antibody responses to tsetse fly saliva in domestic animals in the sleeping sickness endemic foci of Bonon and Sinfra, Côte d'Ivoire.
Vet Parasitol Reg Stud Reports. 2022 09; 34:100773.VP

Abstract

After intensive control efforts, human African trypanosomiasis (HAT) was declared eliminated in Côte d'Ivoire as a public health problem in December 2020 and the current objective is to achieve the interruption of the transmission (zero cases). Reaching this objective could be hindered by the existence of an animal reservoir of Trypanosoma (T.) brucei (b.) gambiense. In the framework of a study led in 2013 to assess the role of domestic animals in the epidemiology of HAT in the two last active foci from Côte d'Ivoire (Bonon and Sinfra), plasmas were sampled from four species of domestic animals for parasitological (microscopic examination by the buffy coat technique (BCT)), serological (immune trypanolysis (TL)) and molecular (specific PCR: TBR for T. brucei s.l., TCF for T. congolense forest type, TVW for T. vivax and PCR for T. b. gambiense) testing. In order to improve the understanding of the involvement/role of these animals in the transmission of T. b. gambiense, we have quantified in this study the IgG response to whole saliva extracts of Glossina palpalis gambiensis in order to perform an association analysis between anti-saliva responses and the positivity of diagnostic tests. Cattle and pigs had significantly higher rates of anti-tsetse saliva responses compared to goats and sheep (p < 0.01). In addition, the anti-tsetse saliva responses were strongly associated with the parasitology (BCT+), serology (TL+) and PCR (TBR+ and TCF+) results (p < 0.001). These associations indicate a high level of contacts between the positive/infected animals and tsetse flies. Our findings suggest that protecting cattle and pigs against tsetse bites could have a significant impact in reducing transmission of both animal and human trypanosome species, and advocates for a "One health" approach to better control African trypanosomosis in Côte d'Ivoire.

Authors+Show Affiliations

Université Nazi BONI (UNB), Laboratoire de santé animale tropicale (LASANTROP), 01 BP 1 091 Bobo-Dioulasso 01, Burkina Faso; Centre International de Recherche-Développement sur l'Elevage en zone Subhumide (CIRDES), Unité de Recherche «maladies à vecteurs et biodiversité (UMaVeB)», 01 BP 454 Bobo-Dioulasso 01, Burkina Faso. Electronic address: bienvenu.somda@cirdes.org.Université Jean Lorougnon Guédé (UJLoG), Unité de Formation et de Recherche Environnement, Laboratoire des Interactions Hôte-Microorganisme-Environnement et Evolution, BP 150 Daloa, Côte d'Ivoire.Université Nazi BONI (UNB), Laboratoire de santé animale tropicale (LASANTROP), 01 BP 1 091 Bobo-Dioulasso 01, Burkina Faso; Centre International de Recherche-Développement sur l'Elevage en zone Subhumide (CIRDES), Unité de Recherche «maladies à vecteurs et biodiversité (UMaVeB)», 01 BP 454 Bobo-Dioulasso 01, Burkina Faso.Institut de Recherche en Sciences de la Santé (IRSS), Unité de Recherche Clinique de Nanoro (URCN), 11 BP 218 Ouagadougou CMS 11, Burkina Faso.Université Nazi BONI (UNB), Laboratoire de santé animale tropicale (LASANTROP), 01 BP 1 091 Bobo-Dioulasso 01, Burkina Faso.Centre International de Recherche-Développement sur l'Elevage en zone Subhumide (CIRDES), Unité de Recherche «maladies à vecteurs et biodiversité (UMaVeB)», 01 BP 454 Bobo-Dioulasso 01, Burkina Faso.Institut de Recherche pour le Développement (IRD), Université de Montpellier, Unité Mixte de Recherche 177 INTERTRYP IRD-CIRAD, 34398 Montpellier, France.MIVEGEC (Maladies Infectieuses et Vecteurs : Écologie, Génétique, Évolution et Contrôle), University of Montpellier, IRD, CNRS, Montpellier, France.Centre International de Recherche-Développement sur l'Elevage en zone Subhumide (CIRDES), Unité de Recherche «maladies à vecteurs et biodiversité (UMaVeB)», 01 BP 454 Bobo-Dioulasso 01, Burkina Faso.MIVEGEC (Maladies Infectieuses et Vecteurs : Écologie, Génétique, Évolution et Contrôle), University of Montpellier, IRD, CNRS, Montpellier, France.Université Nazi BONI (UNB), Laboratoire de santé animale tropicale (LASANTROP), 01 BP 1 091 Bobo-Dioulasso 01, Burkina Faso.Institut de Recherche pour le Développement (IRD), Université de Montpellier, Unité Mixte de Recherche 177 INTERTRYP IRD-CIRAD, 34398 Montpellier, France.Institut de Recherche pour le Développement (IRD), Université de Montpellier, Unité Mixte de Recherche 177 INTERTRYP IRD-CIRAD, 34398 Montpellier, France.Institut de Recherche en Sciences de la Santé (IRSS), Unité de Recherche Clinique de Nanoro (URCN), 11 BP 218 Ouagadougou CMS 11, Burkina Faso.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

36041808

Citation

Somda, Martin Bienvenu, et al. "Evaluation of Antibody Responses to Tsetse Fly Saliva in Domestic Animals in the Sleeping Sickness Endemic Foci of Bonon and Sinfra, Côte D'Ivoire." Veterinary Parasitology, Regional Studies and Reports, vol. 34, 2022, p. 100773.
Somda MB, N'Djetchi MK, Kaboré J, et al. Evaluation of antibody responses to tsetse fly saliva in domestic animals in the sleeping sickness endemic foci of Bonon and Sinfra, Côte d'Ivoire. Vet Parasitol Reg Stud Reports. 2022;34:100773.
Somda, M. B., N'Djetchi, M. K., Kaboré, J., Ilboudo, H., Dama, E., Boma, S., Courtin, F., Poinsignon, A., Bengaly, Z., Remoué, F., Belem, A. M. G., Bucheton, B., Jamonneau, V., & Koffi, M. (2022). Evaluation of antibody responses to tsetse fly saliva in domestic animals in the sleeping sickness endemic foci of Bonon and Sinfra, Côte d'Ivoire. Veterinary Parasitology, Regional Studies and Reports, 34, 100773. https://doi.org/10.1016/j.vprsr.2022.100773
Somda MB, et al. Evaluation of Antibody Responses to Tsetse Fly Saliva in Domestic Animals in the Sleeping Sickness Endemic Foci of Bonon and Sinfra, Côte D'Ivoire. Vet Parasitol Reg Stud Reports. 2022;34:100773. PubMed PMID: 36041808.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evaluation of antibody responses to tsetse fly saliva in domestic animals in the sleeping sickness endemic foci of Bonon and Sinfra, Côte d'Ivoire. AU - Somda,Martin Bienvenu, AU - N'Djetchi,Martial Kassi, AU - Kaboré,Jacques, AU - Ilboudo,Hamidou, AU - Dama,Emilie, AU - Boma,Soudah, AU - Courtin,Fabrice, AU - Poinsignon,Anne, AU - Bengaly,Zakaria, AU - Remoué,Franck, AU - Belem,Adrien Marie Gaston, AU - Bucheton,Bruno, AU - Jamonneau,Vincent, AU - Koffi,Mathurin, Y1 - 2022/08/03/ PY - 2021/12/14/received PY - 2022/07/19/revised PY - 2022/08/01/accepted PY - 2022/8/30/entrez PY - 2022/8/31/pubmed PY - 2022/9/3/medline KW - Animal reservoirs KW - Biomarker of exposure KW - Côte d'Ivoire KW - Trypanosoma brucei gambiense KW - Tsetse fly SP - 100773 EP - 100773 JF - Veterinary parasitology, regional studies and reports JO - Vet Parasitol Reg Stud Reports VL - 34 N2 - After intensive control efforts, human African trypanosomiasis (HAT) was declared eliminated in Côte d'Ivoire as a public health problem in December 2020 and the current objective is to achieve the interruption of the transmission (zero cases). Reaching this objective could be hindered by the existence of an animal reservoir of Trypanosoma (T.) brucei (b.) gambiense. In the framework of a study led in 2013 to assess the role of domestic animals in the epidemiology of HAT in the two last active foci from Côte d'Ivoire (Bonon and Sinfra), plasmas were sampled from four species of domestic animals for parasitological (microscopic examination by the buffy coat technique (BCT)), serological (immune trypanolysis (TL)) and molecular (specific PCR: TBR for T. brucei s.l., TCF for T. congolense forest type, TVW for T. vivax and PCR for T. b. gambiense) testing. In order to improve the understanding of the involvement/role of these animals in the transmission of T. b. gambiense, we have quantified in this study the IgG response to whole saliva extracts of Glossina palpalis gambiensis in order to perform an association analysis between anti-saliva responses and the positivity of diagnostic tests. Cattle and pigs had significantly higher rates of anti-tsetse saliva responses compared to goats and sheep (p < 0.01). In addition, the anti-tsetse saliva responses were strongly associated with the parasitology (BCT+), serology (TL+) and PCR (TBR+ and TCF+) results (p < 0.001). These associations indicate a high level of contacts between the positive/infected animals and tsetse flies. Our findings suggest that protecting cattle and pigs against tsetse bites could have a significant impact in reducing transmission of both animal and human trypanosome species, and advocates for a "One health" approach to better control African trypanosomosis in Côte d'Ivoire. SN - 2405-9390 UR - https://www.unboundmedicine.com/medline/citation/36041808/Evaluation_of_antibody_responses_to_tsetse_fly_saliva_in_domestic_animals_in_the_sleeping_sickness_endemic_foci_of_Bonon_and_Sinfra_Côte_d'Ivoire_ DB - PRIME DP - Unbound Medicine ER -