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In order to evaluate some aspects of the Chagas' disease on urban population of the 12 municipalities of the sanitarian district of Rio Verde, Mato Grosso do Sul state, on 1998 we carried out a serological survey investigating anti-T. cruzi IgG by indirect immunofluorescence on blood samples collected on filter paper of 14,709 resident persons, confirmed by indirect hemagglutination and ELISA in serum. The parasitaemia was evaluated by indirect xenodiagnosis on 134 chagasic patients and the morbidity evaluated by anamnesis, physical exam and electrocardiogram in 191 pairs of chagasic/non-chagasic patients. The seropositivity was 1.83% (0.93% in autochtonous, 5.01% in alochtonous), xenodiagnosis was positive in 17.2% of the individuals (12.3% in autochtonous, 20.8% in alochtonous) and 24.6% of the seropositive patients presented chronic chagasic cardiopathy (19.1% in autochtonous, 27.8 in alochtonous). The analysis of the dates showed that alochtonous population is the main responsible for presence of the infection and morbidity of Chagas disease in the studied area.

Doença de Chagas na população urbana do distrito sanitário de Rio Verde, Mato Grosso do Sul, Brasil