Acute schistosomiasis diagnosis: a new tool for the diagnosis of schistosomiasis in a group of travelers recently infected in a new focus of Schistosoma mansoni
IntroductionThe diagnosis of schistosomiasis mansoni on early stages of infection is important to prevent late morbidity. A simple, cheap, sensitive and specific assay for routine diagnosis of schistosome infection based on the detection of specific IgG for schistosomula tegument antigens (ELISA-SmTeg) was developed by our group.MethodsWe describe here an acute outbreak involving a travel group of 80 individuals from a non-endemic area of the State of Minas Gerais, Brazil. These individuals were in contact with a freshwater pool where Biomphalaria glabrata was found. Results obtained from our new methodology were compared to IgG antibody titers against soluble worm antigenic preparation (SWAP) by ELISA and, also to parasitological examination, nuclear magnetic resonance and clinical findings.ResultsELISA-SmTeg was capable of detecting 64 positive cases among the 80 individuals participating at the survey with a positivity ratio of 80% and a higher sensitivity than ELISA-SWAP that was only sensitive for 56% of positive cases. Besides, a significant correlation was found for the severity of the infection and the specific IgG titers against SmTeg.ConclusionsOur data showed that ELISA-SmTeg might serve as the initial diagnostic tool for acute stages of the infection in community-based helminth control programs or for the surveillance of individuals from non-endemic areas.
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Sociedade Brasileira de Medicina Tropical - SBMT
2013
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oai:scielo:S0037-868220130002002082015-10-27Acute schistosomiasis diagnosis: a new tool for the diagnosis of schistosomiasis in a group of travelers recently infected in a new focus of Schistosoma mansoniGrenfell,Rafaella Fortini QueirozMartins,WatsonDrummond,Sandra CostaAntunes,Carlos Maurício de FigueiredoVoieta,IzabelaOtoni,AlbaOliveira,Áureo Almeida deSilva-Moraes,VanessaOliveira,Eduardo Ribeiro deOliveira,EdwardLambertucci,José RobertoFonseca,Cristina ToscanoCoelho,Paulo Marcos Zech Schistosomiasis mansoni Immunological diagnosis Schistosomula antigens Acute outbreak IntroductionThe diagnosis of schistosomiasis mansoni on early stages of infection is important to prevent late morbidity. A simple, cheap, sensitive and specific assay for routine diagnosis of schistosome infection based on the detection of specific IgG for schistosomula tegument antigens (ELISA-SmTeg) was developed by our group.MethodsWe describe here an acute outbreak involving a travel group of 80 individuals from a non-endemic area of the State of Minas Gerais, Brazil. These individuals were in contact with a freshwater pool where Biomphalaria glabrata was found. Results obtained from our new methodology were compared to IgG antibody titers against soluble worm antigenic preparation (SWAP) by ELISA and, also to parasitological examination, nuclear magnetic resonance and clinical findings.ResultsELISA-SmTeg was capable of detecting 64 positive cases among the 80 individuals participating at the survey with a positivity ratio of 80% and a higher sensitivity than ELISA-SWAP that was only sensitive for 56% of positive cases. Besides, a significant correlation was found for the severity of the infection and the specific IgG titers against SmTeg.ConclusionsOur data showed that ELISA-SmTeg might serve as the initial diagnostic tool for acute stages of the infection in community-based helminth control programs or for the surveillance of individuals from non-endemic areas.info:eu-repo/semantics/openAccessSociedade Brasileira de Medicina Tropical - SBMTRevista da Sociedade Brasileira de Medicina Tropical v.46 n.2 20132013-04-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822013000200208en10.1590/0037-8682-0064-2012 |
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Grenfell,Rafaella Fortini Queiroz Martins,Watson Drummond,Sandra Costa Antunes,Carlos Maurício de Figueiredo Voieta,Izabela Otoni,Alba Oliveira,Áureo Almeida de Silva-Moraes,Vanessa Oliveira,Eduardo Ribeiro de Oliveira,Edward Lambertucci,José Roberto Fonseca,Cristina Toscano Coelho,Paulo Marcos Zech |
| spellingShingle |
Grenfell,Rafaella Fortini Queiroz Martins,Watson Drummond,Sandra Costa Antunes,Carlos Maurício de Figueiredo Voieta,Izabela Otoni,Alba Oliveira,Áureo Almeida de Silva-Moraes,Vanessa Oliveira,Eduardo Ribeiro de Oliveira,Edward Lambertucci,José Roberto Fonseca,Cristina Toscano Coelho,Paulo Marcos Zech Acute schistosomiasis diagnosis: a new tool for the diagnosis of schistosomiasis in a group of travelers recently infected in a new focus of Schistosoma mansoni |
| author_facet |
Grenfell,Rafaella Fortini Queiroz Martins,Watson Drummond,Sandra Costa Antunes,Carlos Maurício de Figueiredo Voieta,Izabela Otoni,Alba Oliveira,Áureo Almeida de Silva-Moraes,Vanessa Oliveira,Eduardo Ribeiro de Oliveira,Edward Lambertucci,José Roberto Fonseca,Cristina Toscano Coelho,Paulo Marcos Zech |
| author_sort |
Grenfell,Rafaella Fortini Queiroz |
| title |
Acute schistosomiasis diagnosis: a new tool for the diagnosis of schistosomiasis in a group of travelers recently infected in a new focus of Schistosoma mansoni |
| title_short |
Acute schistosomiasis diagnosis: a new tool for the diagnosis of schistosomiasis in a group of travelers recently infected in a new focus of Schistosoma mansoni |
| title_full |
Acute schistosomiasis diagnosis: a new tool for the diagnosis of schistosomiasis in a group of travelers recently infected in a new focus of Schistosoma mansoni |
| title_fullStr |
Acute schistosomiasis diagnosis: a new tool for the diagnosis of schistosomiasis in a group of travelers recently infected in a new focus of Schistosoma mansoni |
| title_full_unstemmed |
Acute schistosomiasis diagnosis: a new tool for the diagnosis of schistosomiasis in a group of travelers recently infected in a new focus of Schistosoma mansoni |
| title_sort |
acute schistosomiasis diagnosis: a new tool for the diagnosis of schistosomiasis in a group of travelers recently infected in a new focus of schistosoma mansoni |
| description |
IntroductionThe diagnosis of schistosomiasis mansoni on early stages of infection is important to prevent late morbidity. A simple, cheap, sensitive and specific assay for routine diagnosis of schistosome infection based on the detection of specific IgG for schistosomula tegument antigens (ELISA-SmTeg) was developed by our group.MethodsWe describe here an acute outbreak involving a travel group of 80 individuals from a non-endemic area of the State of Minas Gerais, Brazil. These individuals were in contact with a freshwater pool where Biomphalaria glabrata was found. Results obtained from our new methodology were compared to IgG antibody titers against soluble worm antigenic preparation (SWAP) by ELISA and, also to parasitological examination, nuclear magnetic resonance and clinical findings.ResultsELISA-SmTeg was capable of detecting 64 positive cases among the 80 individuals participating at the survey with a positivity ratio of 80% and a higher sensitivity than ELISA-SWAP that was only sensitive for 56% of positive cases. Besides, a significant correlation was found for the severity of the infection and the specific IgG titers against SmTeg.ConclusionsOur data showed that ELISA-SmTeg might serve as the initial diagnostic tool for acute stages of the infection in community-based helminth control programs or for the surveillance of individuals from non-endemic areas. |
| publisher |
Sociedade Brasileira de Medicina Tropical - SBMT |
| publishDate |
2013 |
| url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822013000200208 |
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