{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,12,31]],"date-time":"2024-12-31T23:10:08Z","timestamp":1735686608020,"version":"3.32.0"},"reference-count":29,"publisher":"FapUNIFESP (SciELO)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Rev. Inst. Med. trop. S. Paulo"],"published-print":{"date-parts":[[1998,7]]},"abstract":"<jats:p>For a period of 2 years, five follow-up measures of prevalence and incidence rates were estimated in a prospective study of S. mansoni infection in a group of schoolchildren who were living in a rural area of the Municipality of Itariri (S\u00e3o Paulo, Brazil), where schistosomiasis is transmitted by Biomphalaria tenagophila. Infection was determined by the examination of three Kato-Katz stool slides, and the parasitological findings were analyzed in comparison to serological data. In the five surveys, carried out at 6-month intervals (March-April and September-October), the prevalences were, respectively, 8.6, 6.8, 9.9, 5.8 and 17.2% by the Kato-Katz, and 56.5, 52.6, 60.8, 53.5 and 70.1% by the immunofluorescence test (IFT). Geometric mean egg counts were low: 57.8, 33.0, 35.6, 47.3 and 40.9 eggs per gram of feces, respectively. Of the total of 299 schoolchildren, who submitted five blood samples at 6-month intervals, one for each survey, 40% were IFT-positive throughout the study, and 22% were IFT-negative in all five surveys. Seroconversion from IFT negative to positive, indicating newly acquired S. mansoni infection, was observed more frequently in surveys carried out during March-April (after Summer holidays), than during September-October. Seasonal trends were not statistically significant for detection of S. mansoni eggs in stool. The results indicate that the use of IgM-IFT is superior to parasitological methods for detection of incidence of S. mansoni infection in areas with low worm burden.<\/jats:p>","DOI":"10.1590\/s0036-46651998000400004","type":"journal-article","created":{"date-parts":[[2005,4,27]],"date-time":"2005-04-27T13:25:24Z","timestamp":1114608324000},"page":"225-231","source":"Crossref","is-referenced-by-count":13,"title":["DETECTION OF IgM ANTIBODIES TO Schistosoma mansoni GUT-ASSOCIATED ANTIGENS FOR THE STUDY OF THE DYNAMICS OF SCHISTOSOMIASIS TRANSMISSION IN AN ENDEMIC AREA WITH LOW WORM BURDEN"],"prefix":"10.1590","volume":"40","author":[{"given":"Herminia Y.","family":"KANAMURA","sequence":"first","affiliation":[{"name":"Universidade de S\u00e3o Paulo"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luiz Candido S.","family":"DIAS","sequence":"additional","affiliation":[{"name":"Universidade Estadual de Campinas"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carmem M.","family":"GLASSER","sequence":"additional","affiliation":[{"name":"Superintend\u00eancia do Controle de Endemias - SUCEN"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rita Maria da","family":"SILVA","sequence":"additional","affiliation":[{"name":"Secretaria de Estado da Sa\u00fade de S\u00e3o Paulo"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rosa Maria J.","family":"PATUCCI","sequence":"additional","affiliation":[{"name":"Superintend\u00eancia do Controle de Endemias - SUCEN"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"G.","family":"CHIODELLI","sequence":"additional","affiliation":[{"name":"Secretaria de Estado da Sa\u00fade de S\u00e3o Paulo"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David G.","family":"ADDISS","sequence":"additional","affiliation":[{"name":"National Center for Infectious Diseases, Centers for Diseases Control and Prevention"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"530","reference":[{"key":"ref1","doi-asserted-by":"crossref","first-page":"554","DOI":"10.1016\/0035-9203(90)90037-F","article-title":"Implications of faecal egg count variation when using the Kato-Katz method to assess Schistosoma mansoni infections","volume":"84","author":"BARRETO M. L.","year":"1990","journal-title":"Trans. roy. Soc. trop. Med. Hyg.","ISSN":"https:\/\/id.crossref.org\/issn\/0035-9203","issn-type":"print"},{"year":"1995","series-title":"Epi Info, Version 6: a word processing, database, and statistics program for public health on IBM-compatible microcomputers","author":"DEAN A. G.","key":"ref2"},{"key":"ref3","first-page":"257","article-title":"Immunodiagnosis of schistosomiasis patients in The Netherlands: comparison of antibody and antigen detection before and after chemotherapy","volume":"41","author":"DE JONGE N.","year":"1990","journal-title":"Trop. Med. 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Pat. clin."},{"key":"ref29","doi-asserted-by":"crossref","first-page":"358","DOI":"10.4269\/ajtmh.1997.57.358","article-title":"Efficacy of an enzyme-linked immunosorbent assay in the diagnosis of and serologic distinction between acute and chronic Schistosoma mansoni infection","volume":"57","author":"VALLI L.C.P.","year":"1997","journal-title":"Amer. J. trop. Med. 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