Assessment of schistosomiasis in the semi-arid Northeast region of Brazil : the São Francisco River large-scale water transposition project

• Autor(a) principal: Favre, Tereza Cristina
• Data de Publicação: 2016
• Outros Autores: Fernandez, Monica Ammon, Beck, Lilian Christina Nóbrega Holsbach, Guimarães, Ricardo José de Paula Souza e, Pieri, Otávio Sarmento, Thiengo, Silvana Aparecida Carvalho
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Digital do Instituto Evandro Chagas (Patuá)
• Texto Completo: https://patua.iec.gov.br/handle/iec/2457
• topic: Esquistossomose / epidemiologia; Esquistossomose / transmissão; Fezes / parasitologia; Biomphalaria / parasitologia; Contagem de Ovos de Parasitas; Estudantes; Ensino Fundamental e Médio; Zona Rural; Área Urbana; Brasil (BR)

Introduction: Risk of schistosomiasis expansion to semi-arid northeastern Brazil under the influence of the Integration Project of the São Francisco River (IPSFR) was assessed. Methods: Stool examinations of schoolchildren, epidemiological investigation, and survey of the local host snail Biomphalaria straminea were performed in five IPSFR municipalities. Results: Six of 4,770 examined schoolchildren were egg-positive for Schistosoma mansoni. Biomphalaria straminea was widespread, but not naturally infected with S. mansoni. Snails experimentally exposed to two laboratory S. mansoni strains yielded infection indices of 1-4.5%. Conclusions: There is evidence of active schistosomiasis transmission in the area; thus, intensive surveillance actions are required.