Evaluation of two coproscopic techniques for the diagnosis of schistosomiasis in a low-transmission area in the state of Minas Gerais, Brazil
Mem. Inst. Oswaldo Cruz
;
106(7): 844-850, Nov. 2011. ilus, graf, tab
Article
in English
| LILACS
| ID: lil-606648
ABSTRACT
This population study, which evaluated two parasitological methods for the diagnosis of schistosomiasis mansoni, was performed in a low-transmission area in Pedra Preta, Montes Claros, Minas Gerais, Brazil. A total of 201 inhabitants of the rural area participated in this research. Four stool samples were obtained from all participants and analysed using the Kato-Katz method (18 slides) and a commercial test, the TF-Test®, which was performed quantitatively. The data were analysed to determine prevalence, the sensitivity of the diagnostic methods, the worm burden and the definition of the "gold standard", which was obtained by totalling the results of all samples examined using the Kato-Katz technique and the TF-Test®. The results showed that the prevalence obtained from the examination of one Kato-Katz slide (the methodology adopted by the Brazilian control programme) was 8 percent compared to 35.8 percent from the "gold standard", which was a 4.5-fold difference. This result indicates that the prevalence of schistosomiasis in so-called low-transmission areas is significantly underestimated.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Parasite Egg Count
/
Schistosoma mansoni
/
Schistosomiasis mansoni
/
Feces
Type of study:
Diagnostic study
/
Evaluation studies
/
Prevalence study
/
Risk factors
Limits:
Aged80
/
Animals
/
Female
/
Humans
/
Male
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
2011
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Centro de Controle de Zoonoses/BR
/
Instituto de Pesquisas René Rachou-Fiocruz/BR
/
Universidade Vale do Rio Doce/BR
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