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Title: Seroprevalence of Trypanosoma cruzi Infection in Students at the Seven-Fourteen Age Range, Londrina, PR, Brazil, in 1995
Authors: Bonametti, Ana Maria
Castelo Filho, Adauto [UNIFESP]
Ramos, Luiz Roberto [UNIFESP]
Camargo, Eide Dias
Nakamura, Paulo Mutuko
Baldy, José Luís da Silveira
Matsuo, Tiemi
Universidade Estadual de Londrina
Universidade Federal de São Paulo (UNIFESP)
Instituto Adolfo Lutz
Keywords: Chagas disease
control program
Issue Date: 1-Nov-1998
Publisher: Instituto Oswaldo Cruz, Ministério da Saúde
Citation: Memórias do Instituto Oswaldo Cruz. Instituto Oswaldo Cruz, Ministério da Saúde, v. 93, n. 6, p. 727-732, 1998.
Abstract: Seropositivity for Chagas disease was evaluated in 834 children aged between 7 and 14 from the Municipal Teaching System in the district of Londrina, State of Paraná. A seroprevalence rate of 0.1% was found through the use of an indirect immunofluorescent test and an enzyme-linked immunosorbent assay. This low rate of seroprevalence provides evidence that the vectorial transmission of Chagas disease has been eliminated in Londrina. The main reason for the elimination of vectorial transmission of Trypanosoma cruzi infection, as evaluated by serological tests, may be a remarkable change in the economic structure of the northern region of Paraná in the 1960's. At that time coffee production was almost completely replaced by soy beans, wheat and grazing in the rural areas. This change deeply affected the rural ecology and caused an exodus of the population from rural to urban areas as well as a decrease in the total number of the population of that region. The measures introduced for controlling the disease through the Program of Chagas Disease Control established by the Fundação Nacional de Saúde of the Brazilian Ministry of Health, certainly, had a positive impact on the reduction of American trypanosomiasis prevalence in the area under study. However, it does not seem that this was the most relevant factor responsible for the elimination of vectorial transmission of Chagas disease in Londrina.
ISSN: 0074-0276
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