Resumos
São realizados levantamentos no Município de Bambuí quanto à densidade de triatomíneos e ídices de infecção para o S. cruzi. São consideradas as duas localidades de maior densidade aparente de triatomíneos no Município (Ingazeiro e Pedra Branca) e das outras ecolhidas ao acaso. Constata-se reinsfestação, repopulação, mormente a partir do P. megistus, predominando os focos domiciliares. Aprecia-se a natureza dos focos, abordando-se as possibilidades de repopulação (focos silvestres, residuais, imigrações, etc.). Pràticamente não se encontraram insetos infetados pelo S. cruzi. Os dados de capturas e infecção são comparados com cifras anteriores, publicadas em diversos trabalhos de E. DIAS. Em face dos resultado apresentados, discute-se o métodos de Profilaxia de E. DIAS, aplicado em Bambuí entre agôsto de 1956 e fevereiro de 1957. São feitas referências ao aparecimento de dois "casos agudos" de doença de Chagas em Bambuí no ano de 1963, os primeiros verificados após a campanha profilática de 1956.
A survey of the district of Bambuí, Minas Gerais, Brasil, has been made in relation to the density of the tritomids and the indexes of infection fo the S. cruzi after an experimental erradicational campaign made by DIAS in 1956. A total of 332 dwellings was examined (in four localities chosen at random), 59 focuses having been found (14.76%): 15,3% of these had been already detected by DIAS in the third phase of his experimental campaign, (revision phase) six years ago, and were considered "residual focuses". The P. megistus focuses (68%) were predominant over the T. infestans (28%) and there was an association of the 2 species in 4%. The great majority of the focuses (72.9%) occurred in the interior of brick houses ("Térreos"). Only 27,10% of the focuses were found in the poor houses of straw roof. Wild focuses were not found. It must be stressed the occurence of three acute cases of the disease that were registered this year at the "Pôsto do Instituto Oswaldo Cruz" of Bambuí, the first ones to appear after the 1956-campaign; also the great acceptance of the Population to the work done, thus demonstrating the great importance of the Sanitary Education which has been given to the district for many years. Concluding: Althoug the work done by DIAS in 1956 did not completely erradicate the triatomids from the district, it was efficient for 6 years even though the campaign was not thoroughtly performed (the third phase of inspection and control was not completed). The re-infestation of the district is due to: 1) Residual focuses not detecte. 2) Residual focuses erradicated (15%). 3) Re-infestation due to surrounding districts. 4) Technical omissions during the desinsectization. Other studies will complement the present work, stressing other factors that limited the pioneer work of E. DIAS. Only then, an affirmation over the failure or the sucess of a method, may be made.
Reinfestação do Município de Bambuí por triatomíneos transmissores da Doença de Chagas
João Carlos Pinto Dias1
Instituto Oswaldo Cruz, Rio de Janeiro, Brasil
São realizados levantamentos no Município de Bambuí quanto à densidade de triatomíneos e ídices de infecção para o S. cruzi. São consideradas as duas localidades de maior densidade aparente de triatomíneos no Município (Ingazeiro e Pedra Branca) e das outras ecolhidas ao acaso. Constata-se reinsfestação, repopulação, mormente a partir do P. megistus, predominando os focos domiciliares. Aprecia-se a natureza dos focos, abordando-se as possibilidades de repopulação (focos silvestres, residuais, imigrações, etc.). Pràticamente não se encontraram insetos infetados pelo S. cruzi. Os dados de capturas e infecção são comparados com cifras anteriores, publicadas em diversos trabalhos de E. DIAS. Em face dos resultado apresentados, discute-se o métodos de Profilaxia de E. DIAS, aplicado em Bambuí entre agôsto de 1956 e fevereiro de 1957. São feitas referências ao aparecimento de dois "casos agudos" de doença de Chagas em Bambuí no ano de 1963, os primeiros verificados após a campanha profilática de 1956.
A survey of the district of Bambuí, Minas Gerais, Brasil, has been made in relation to the density of the tritomids and the indexes of infection fo the S. cruzi after an experimental erradicational campaign made by DIAS in 1956. A total of 332 dwellings was examined (in four localities chosen at random), 59 focuses having been found (14.76%): 15,3% of these had been already detected by DIAS in the third phase of his experimental campaign, (revision phase) six years ago, and were considered "residual focuses". The P. megistus focuses (68%) were predominant over the T. infestans (28%) and there was an association of the 2 species in 4%. The great majority of the focuses (72.9%) occurred in the interior of brick houses ("Térreos"). Only 27,10% of the focuses were found in the poor houses of straw roof. Wild focuses were not found. It must be stressed the occurence of three acute cases of the disease that were registered this year at the "Pôsto do Instituto Oswaldo Cruz" of Bambuí, the first ones to appear after the 1956-campaign; also the great acceptance of the Population to the work done, thus demonstrating the great importance of the Sanitary Education which has been given to the district for many years. Concluding: Althoug the work done by DIAS in 1956 did not completely erradicate the triatomids from the district, it was efficient for 6 years even though the campaign was not thoroughtly performed (the third phase of inspection and control was not completed). The re-infestation of the district is due to: 1) Residual focuses not detecte. 2) Residual focuses erradicated (15%). 3) Re-infestation due to surrounding districts. 4) Technical omissions during the desinsectization. Other studies will complement the present work, stressing other factors that limited the pioneer work of E. DIAS. Only then, an affirmation over the failure or the sucess of a method, may be made.
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Datas de Publicação
-
Publicação nesta coleção
27 Ago 2009 -
Data do Fascículo
1965
