Schistosomiasis mansoni in three localities of western lowland of the state of Maranhão before and after mass treatments
A cross-sectional study for schistosomiasis was carried out in the localities of Aliança, Alegre and Coroatá (districts of Cururupu, São Bento and São João Batista, respectively) in the lowland of the state of Maranhão, after respectively 13, 11 and 4 mass treatments with oxamniquine in the period of ten years (1977-1987). The study included clinical and quantitative fecal examination, skin test for Shistosoma mansoni infection, evaluation of man-water contact of the total population (829 persons) in the three localities and other epidemiological investigations such as infection rate and dynamics of the snail population. After 13 mass treatments in Aliança, the prevalence of S. mansoni infection was reduced from 57.9% to 7.4%. In Coroatá with 11 mass treatments the prevalence fell from 69.2% to 12.8% and in Alegre, with only 4 mass treatments there was pratically no reduction in prevalence: 22.9% to 21%. After mass treatments the type II hepatointestinal clinical form was 10.8% in Aliança, 17.9% in Alegre and 18% in Coroatá. The hepatosplenic (type III) form was not seen in Aliança and Coroatá but unexplanably it was 7.6% in Alegre. There was no correlation between the egg load elimination and the clinical forms.
Main Authors: | Cutrim,Raimundo Nonato Martins, Coura,José Rodrigues |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Instituto Oswaldo Cruz, Ministério da Saúde
1992
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02761992000400015 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
SCHISTOSOMIASIS MANSONI IN THE "BAIXADA OCIDENTAL MARANHENSE", STATE OF MARANHÃO, BRAZIL: CROSS-SECTIONAL STUDIES PERFORMED IN 1987 AND 1993
by: CUTRIM,Raimundo Nonato Martins, et al.
Published: (1998) -
Antibody isotype responses to egg antigens in human chronic Schistosomiasis mansoni before and after treatment
by: Gomes,Yara M, et al.
Published: (2002) -
Evaluation of anti-Schistosoma mansoni igG antibodies in patients with chronic schistosomiasis mansoni before and after specific treatment
by: VENDRAME,Célia Maria V., et al.
Published: (2001) -
Cross-sectional and evolutive studies of schistosomiasis mansoni in untreated and mass treated endemic areas in the southeast and northeast of Brazil
by: Coura,José Rodrigues, et al.
Published: (1992) -
Schistosoma mansoni circulating polysaccharide and protein antigens recognized by sheep antisera in patients with different clinical forms of schistosomiasis before and after treatment
by: Costa-Cruz,Julia Maria, et al.
Published: (1994)