Seroprevalence of Trypanosoma cruzi infection in students at the seven-fourteen age range, Londrina, PR, Brazil, in 1995
Mem. Inst. Oswaldo Cruz
; 93(6): 727-32, Nov.-Dec. 1998. tab
Article
em En
| LILACS
| ID: lil-223871
Biblioteca responsável:
BR15.1
RESUMO
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 per cent was found through the use of an indirect immunofluorescent test and an enzyne-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 Fundaçäo 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 responsable for the elimination of vectorial transmission of Chagas disease in Londrina.
Texto completo:
1
Bases de dados:
LILACS
Assunto principal:
Trypanosoma cruzi
/
Doença de Chagas
Tipo de estudo:
Risk_factors_studies
Limite:
Child
/
Humans
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Mem Inst Oswaldo Cruz
/
Mem. Inst. Oswaldo Cruz
/
Mem. Inst. Oswaldo Cruz (Online)
/
Memórias do Instituto Oswaldo Cruz (Impresso)
/
Proceedings of the Instituto Oswaldo Cruz
Assunto da revista:
MEDICINA TROPICAL
/
PARASITOLOGIA
Ano de publicação:
1998
Tipo de documento:
Article