Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/7234
Title: Genetic population structure of cercariae from an urban foci of Schistosoma mansoni, Brazil
Authors: Souza, Samaly dos Santos
Barbosa, Lúcio Macedo
Guimarães, Isabel C. S
Blank, Walter A
Reis, Renato Barbosa
Reis, Mitermayer Galvão dos
Blanton, Ronald Edward
Andrade, Zilton de Araújo
Affilliation: Fundação Oswaldo Cruz. Centro de Pesquisa Gonçalo Moniz. Salvador, BA, Brasil
Fundação Oswaldo Cruz. Centro de Pesquisa Gonçalo Moniz. Salvador, BA, Brasil
Municipal Secretariat of Health. Center for Control of Zoonoses. Salvador, BA, Brasil
Center for Global Health and Diseases. Case Western Reserve University. Biomedical Research Building. Cleveland, OH
Fundação Oswaldo Cruz. Centro de Pesquisa Gonçalo Moniz. Salvador, BA, Brasil
Fundação Oswaldo Cruz. Centro de Pesquisa Gonçalo Moniz. Salvador, BA, Brasil
Center for Global Health and Diseases. Case Western Reserve University. Biomedical Research Building. Cleveland, OH
Fundação Oswaldo Cruz. Centro de Pesquisa Gonçalo Moniz. Salvador, BA, Brasil
Abstract: Rapid urbanization in Brazil has meant that many persons from rural areas where Schistosoma mansoni is endemic have migrated to cities. Discovery of a focus of active transmission in the city of Salvador prompted a citywide survey for active and potential transmission sites. Cercariae shed from infected snails collected from four locations were used to determine how these samples were related and if they were representative of the parasite population infecting humans. Each cercarial collection was greatly differentiated from the others, and diversity was significantly lower when compared with eggs from natural human infections in one site. Egg samples collected 7 years apart in one neighborhood showed little differentiation (Jost’s D = 0.01–0.03). Given the clonal nature of parasite reproduction in the snail host and the short-term acquisition of parasites, cercariae from collections at one time point are unlikely to be representative of the diversity in the human population.
DeCS: Schistosoma mansoni
Transmissão
Issue Date: 2012
Publisher: The American Society of Tropical Medicine and Hygiene
Citation: SOUZA, S.S. et al. Genetic population structure of cercariae from an urban foci of Schistosoma mansoni, Brazil. American Journal of Tropical Medicine and Hygiene, v. 87, n. 5, p. 843–849, 2012.
DOI: 10.4269/ajtmh.2012.11-0641
ISSN: 0002-9637
Copyright: open access
Appears in Collections:BA - IGM - Artigos de Periódicos

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