title: Evaluation of a 25-year-program for the control of schistosomiasis mansoni in an endemic area in Brazil.
abstract: BACKGROUND
  Various studies showed that chemotherapy can control schistosomiasis morbidity, but association of measures (water supply, sewage disposal and increase of socioeconomic conditions) is necessary for transmission control.
  
  
  RESULTS
  A survey dealing with socioeconomic conditions, snail survey, contact with natural waters, and clinical and stool examinations was undertaken at an endemic area in the State of Minas Gerais, Brazil. The methodology used was the same for both evaluations (1981 and 2005). Four hundred and seventy-five out of 1,474 individuals studied in 1981 could be contacted. From these, 358 were submitted to stool examination, and 231 of them were clinically examined. Patients eliminating S. mansoni eggs in their stools were treated. The results showed that the prevalence rate in Comercinho, a municipality of the State of Minas Gerais, Brazil, was substantially reduced to 70.4% and 1.7% in 1981 and 2005, respectively, as well as the frequency of the hepatosplenic form (7% to 1.3%) after five treatments effectuated between 1981 and 1992. No other new case of this form was detected from 1981 onwards. Another important aspect to be considered was the improvement of people's living standard that occurred in the region after more than two decades' efforts (better housing, professional skill and adequate basic sanitation).
  
  
  CONCLUSIONS
  The control of morbidity and very significant decrease of schistosomiasis transmission in an area until then considered as hyperendemic was possible by means of association of successive specific treatments of the local population, together with the construction of privies, water supply in the houses and improvement of socioeconomic conditions.
authors.affiliation: Laboratory of Schistosomiasis, Research Center René Rachou/FIOCRUZ, Belo Horizonte, Minas Gerais, Brazil.
authors.forename: Ana K
authors.initials: AK
authors.lastname: Sarvel
authors.forename: Aureo A
authors.initials: AA
authors.lastname: Oliveira
authors.forename: Alexandre R
authors.initials: AR
authors.lastname: Silva
authors.forename: Anna C L
authors.initials: AC
authors.lastname: Lima
authors.forename: Naftale
authors.initials: N
authors.lastname: Katz
mesh_terms: D000293:Adolescent; D000328:Adult; D000818:Animals; D000871:Anthelmintics / Q000008:administration & dosage; D001938:Brazil / Q000453:epidemiology; D002648:Child; D003140:Communicable Disease Control / Q000379:methods*; D019353:Endemic Diseases; D006302:Health Services Research; D006801:Humans; D015995:Prevalence; D012550:Schistosoma mansoni / Q000302:isolation & purification*; D012555:Schistosomiasis mansoni / Q000175:diagnosis / Q000188:drug therapy / Q000453:epidemiology* / Q000517:prevention & control*
chemical_list: D000871:Anthelmintics