Epidemiology of Schistosoma mansoni infection in a low-endemic area in Brazil: clinical and nutritional characteristics
Rev. Inst. Med. Trop. Säo Paulo
;
34(5): 409-19, set.-out. 1992. tab, graf
Article
Dans Anglais
| LILACS
| ID: lil-134539
ABSTRACT
A cross-sectional case-control study designed to evaluate the role of malnutrition in the association between the intensity of Schistosoma mansoni infection and clinical schistosomiasis, was conducted in an area with both low frequency of infection and low morbidity of schistosomiasis in Brazil. Cases (256) were patients with a positive stool examination for S. mansoni; their geometrical mean number of eggs/gram of feces was 90. Controls (256) were a random sample of the negative participants paired to the cases by age, sex and length of residence in the area. The clinical signs and symptoms found to be associated with S. mansoni infection, comparing cases and controls, were blood in stools and presence of a palpable liver. A linear trend in the relative odds of these signs and symptoms with increasing levels of infection was detected. Adjusting by the level of egg excretion, the existence of an interaction between palpable liver and ethnic group (white) was suggested. No differences in the nutritional status of infected and non-infected participants were found
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Schistosomiase à Schistosoma mansoni
/
Réservoirs de maladies
Type d'étude:
Etude diagnostique
/
Etude d'étiologie
/
Etude d'incidence
/
Étude observationnelle
/
Étude de prévalence
/
Étude pronostique
/
Facteurs de risque
/
Étude de dépistage
Limites du sujet:
Animaux
/
Femelle
/
Humains
/
Mâle
Pays comme sujet:
Amérique du Sud
/
Brésil
langue:
Anglais
Texte intégral:
Rev. Inst. Med. Trop. Säo Paulo
Thème du journal:
Médecine tropicale
Année:
1992
Type:
Article
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