The prolonged use of niclosamide as a molluscicide for the control of Schistosoma mansoni Uso prolongado da niclosamida como moluscicida para o controle do Schistosoma mansoni
Applications of niclosamide at three-monthly intervals were undertaken for 14 years in foci of Biomphalaria glabrata in the water sources of Peri-Peri (Capim Branco, MG). All the residents of the area were submitted to an annual fecal examination (Kato/Katz) and those individuals eliminating Schisto...
Published in: | Revista do Instituto de Medicina Tropical de São Paulo |
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Universidade de São Paulo (USP)
1992
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ftdoajarticles:oai:doaj.org/article:37142802169f4514bdad9306437c6404 2024-09-09T19:28:30+00:00 The prolonged use of niclosamide as a molluscicide for the control of Schistosoma mansoni Uso prolongado da niclosamida como moluscicida para o controle do Schistosoma mansoni Pedro Coura-Filho Nelymar Martinelli Mendes Cecilia Pereira de Souza José Pedro Pereira 1992-10-01T00:00:00Z https://doi.org/10.1590/S0036-46651992000500009 https://doaj.org/article/37142802169f4514bdad9306437c6404 EN eng Universidade de São Paulo (USP) http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46651992000500009 https://doaj.org/toc/0036-4665 https://doaj.org/toc/1678-9946 doi:10.1590/S0036-46651992000500009 0036-4665 1678-9946 https://doaj.org/article/37142802169f4514bdad9306437c6404 Revista do Instituto de Medicina Tropical de São Paulo, Vol 34, Iss 5, Pp 427-431 (1992) Schistosomiasis Control Molluscicide Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 article 1992 ftdoajarticles https://doi.org/10.1590/S0036-46651992000500009 2024-08-05T17:49:30Z Applications of niclosamide at three-monthly intervals were undertaken for 14 years in foci of Biomphalaria glabrata in the water sources of Peri-Peri (Capim Branco, MG). All the residents of the area were submitted to an annual fecal examination (Kato/Katz) and those individuals eliminating Schistosoma mansoni eggs were treated with oxamniquine. A malacological survey was undertaken at three-monthly intervals by means of ten scoops with a perforated ladle each ten metres along the two banks of the ditches and streams of the region. Where snails were found, molluscicide was applied by means of dripping or aspersion using a 3 ppm aqueous suspension of niclosamide. Initially, a mean of 14.3% of snails in the region were found to be eliminating cercariae. Following the first four applications of molluscicide, this was reduced to 0.0% and maintained at about 1.5% throughout the program. Thus, there was a continued possibility of schistosomiasis transmission in the area and it was observed that the population of snails reestablished itself within three months of molluscicide application. The results obtained in this study do not encourage the continual use of niclosamide as the only method of control of schistosomiasis. Aplicações trimestrais de niclosamida foram realizadas catorze anos em focos de Biomphalaria glabrata nas coleções hídricas de Peri-Peri, (Capim Branco, MG). Anualmente, os residentes da área eram submetidos a um exame coproscópio (Kato-Katz) e os que eliminavam ovos de Schistosoma mansoni nas fezes eram tratados com oxarnniquine. O levantamento malacológico trimestral foi realizado através de dez conchadas a cada dez metros nas duas margens das valas e córregos da região. Onde eram encontrados caramujos aplicava-se o moluscicida pela técnica de gotejamento ou aspersão de suspensão aquosa da niclosamida a 3 ppm. O índice médio de caramujos eliminando cercarias na região era de 14,3%. Após as quatro primeiras aplicações, foi reduzido a 0,0% e mantido em torno de 1,5% durante o programa. Portanto, a ... Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Revista do Instituto de Medicina Tropical de São Paulo 34 5 427 431 |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Schistosomiasis Control Molluscicide Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
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Schistosomiasis Control Molluscicide Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 Pedro Coura-Filho Nelymar Martinelli Mendes Cecilia Pereira de Souza José Pedro Pereira The prolonged use of niclosamide as a molluscicide for the control of Schistosoma mansoni Uso prolongado da niclosamida como moluscicida para o controle do Schistosoma mansoni |
topic_facet |
Schistosomiasis Control Molluscicide Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
description |
Applications of niclosamide at three-monthly intervals were undertaken for 14 years in foci of Biomphalaria glabrata in the water sources of Peri-Peri (Capim Branco, MG). All the residents of the area were submitted to an annual fecal examination (Kato/Katz) and those individuals eliminating Schistosoma mansoni eggs were treated with oxamniquine. A malacological survey was undertaken at three-monthly intervals by means of ten scoops with a perforated ladle each ten metres along the two banks of the ditches and streams of the region. Where snails were found, molluscicide was applied by means of dripping or aspersion using a 3 ppm aqueous suspension of niclosamide. Initially, a mean of 14.3% of snails in the region were found to be eliminating cercariae. Following the first four applications of molluscicide, this was reduced to 0.0% and maintained at about 1.5% throughout the program. Thus, there was a continued possibility of schistosomiasis transmission in the area and it was observed that the population of snails reestablished itself within three months of molluscicide application. The results obtained in this study do not encourage the continual use of niclosamide as the only method of control of schistosomiasis. Aplicações trimestrais de niclosamida foram realizadas catorze anos em focos de Biomphalaria glabrata nas coleções hídricas de Peri-Peri, (Capim Branco, MG). Anualmente, os residentes da área eram submetidos a um exame coproscópio (Kato-Katz) e os que eliminavam ovos de Schistosoma mansoni nas fezes eram tratados com oxarnniquine. O levantamento malacológico trimestral foi realizado através de dez conchadas a cada dez metros nas duas margens das valas e córregos da região. Onde eram encontrados caramujos aplicava-se o moluscicida pela técnica de gotejamento ou aspersão de suspensão aquosa da niclosamida a 3 ppm. O índice médio de caramujos eliminando cercarias na região era de 14,3%. Após as quatro primeiras aplicações, foi reduzido a 0,0% e mantido em torno de 1,5% durante o programa. Portanto, a ... |
format |
Article in Journal/Newspaper |
author |
Pedro Coura-Filho Nelymar Martinelli Mendes Cecilia Pereira de Souza José Pedro Pereira |
author_facet |
Pedro Coura-Filho Nelymar Martinelli Mendes Cecilia Pereira de Souza José Pedro Pereira |
author_sort |
Pedro Coura-Filho |
title |
The prolonged use of niclosamide as a molluscicide for the control of Schistosoma mansoni Uso prolongado da niclosamida como moluscicida para o controle do Schistosoma mansoni |
title_short |
The prolonged use of niclosamide as a molluscicide for the control of Schistosoma mansoni Uso prolongado da niclosamida como moluscicida para o controle do Schistosoma mansoni |
title_full |
The prolonged use of niclosamide as a molluscicide for the control of Schistosoma mansoni Uso prolongado da niclosamida como moluscicida para o controle do Schistosoma mansoni |
title_fullStr |
The prolonged use of niclosamide as a molluscicide for the control of Schistosoma mansoni Uso prolongado da niclosamida como moluscicida para o controle do Schistosoma mansoni |
title_full_unstemmed |
The prolonged use of niclosamide as a molluscicide for the control of Schistosoma mansoni Uso prolongado da niclosamida como moluscicida para o controle do Schistosoma mansoni |
title_sort |
prolonged use of niclosamide as a molluscicide for the control of schistosoma mansoni uso prolongado da niclosamida como moluscicida para o controle do schistosoma mansoni |
publisher |
Universidade de São Paulo (USP) |
publishDate |
1992 |
url |
https://doi.org/10.1590/S0036-46651992000500009 https://doaj.org/article/37142802169f4514bdad9306437c6404 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Revista do Instituto de Medicina Tropical de São Paulo, Vol 34, Iss 5, Pp 427-431 (1992) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46651992000500009 https://doaj.org/toc/0036-4665 https://doaj.org/toc/1678-9946 doi:10.1590/S0036-46651992000500009 0036-4665 1678-9946 https://doaj.org/article/37142802169f4514bdad9306437c6404 |
op_doi |
https://doi.org/10.1590/S0036-46651992000500009 |
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Revista do Instituto de Medicina Tropical de São Paulo |
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34 |
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