A 12-year follow-up of intestinal schistosomiasis in pre-school-aged children in Assoni Village, Eastern Senegal

Autor: Monique N’Diaye, Boubacar Fodé Keita, Fodé Danfakha, Fili Keita, Gérald Keita, Cheikh Sadibou Senghor, Bocar Diop, Lamine Diawara, François Bessin, Charlotte Vernet, Dominique Barbier, Patrick Dewavrin, Francis Klotz
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Infectious Diseases of Poverty, Vol 10, Iss 1, Pp 1-13 (2021)
Druh dokumentu: article
ISSN: 2049-9957
DOI: 10.1186/s40249-021-00867-8
Popis: Abstract Background To monitor the prevalence of schistosomiasis in school-aged children (SAC), the National Bilharzia Control Program (PNLB) was set up by the Senegalese authorities; however, geographically isolated Bedik ethnic groups that did not benefit from this program were found to be heavily infected with Schistosoma mansoni. This observation led us to implement a new schistosomiasis control program in 2008 under the aegis of the non-governmental organization “Le Kaïcedrat” and in partnership with the PNLB/WHO to monitor the prevalence of schistosomiasis in this area. In the village of Assoni, where 100% of SAC were infected, analysis of the stools of pre-school-aged children (PSAC) showed that they were massively infected, so we decided to focus our program on them. Methods From 2008 to 2020, we (i) monitored the prevalence of S. mansoni in PSAC in Assoni using double-stool smear preparation, (ii) treated the infected PSAC with a standard dose of praziquantel 40 mg/kg, (iii) ran educational campaigns each year in the village, and (iv) built latrines to improve sanitation and reduce schistosomiasis transmission. Linear regression was used to examine the trend in the annual schistosomiasis prevalence and a two-sided of Chi-squared test was used to compare prevalence between the different age groups of PSAC. Results We observed an extremely high prevalence of schistosomiasis (78%) in PSAC before implementation of the program in 2008. Contamination occurred in very young children, as 64.3% of children under 2 years old were infected. Moreover, prevalence increased with age and reached 96.8% in children 4 to
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