Cenário da vigilância entomológica e controle dos vetores de Trypanosoma cruzi nas diferentes mesorregiões do estado do Rio Grande do Norte
The evaluation of entomological surveillance and vector control in the different mesoregions of the state of Rio Grande do Norte was carried out to identify areas with possibilities of transmission of Trypanosoma cruzi, using data provided by the Secretaria do Estado da Saúde Pública (SESAP/RN) rega...
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| Formato: | bachelorThesis |
| Idioma: | pt_BR |
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Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/35677 |
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| Resumo: | The evaluation of entomological surveillance and vector control in the different mesoregions of the state of Rio Grande do Norte was carried out to identify areas with possibilities of transmission of Trypanosoma cruzi, using data provided by the Secretaria do Estado da Saúde Pública (SESAP/RN) regarding the active search for triatomines in the period from 2005 to 2015. The analysis of the risk stratification of T. cruzi transmission revealed that the West mesoregion has the highest number of high and medium risk municipalities and also had a high number of households surveyed. The execution of chemical control in the infested home units occurred discontinuously in the three mesoregions, with the number of sprayed units being lower than the number of positive units in the 11 years investigated. The municipalities of Apodi (West mesoregion) and Currais Novos (Central mesoregion) stood out for the high number of triatomines captured in households (> 2,500). The West and Central mesoregions showed high rates of home colonization in all the years evaluated, especially in 2006, corresponding to 39.6% and 38.5%, respectively. In the Agreste mesoregion, there was no record of nymphs inside houses in 2008. The total infestation rate varied over the years and was highest in 2007 in the Agreste mesoregion, in 2011 in the Central and in 2015 in the West mesoregion, corresponding to 21.2 %, 10.7% and 9.8%, respectively. The highest rates of intradomiciliar and peridomiciliar infestation were recorded in the western mesoregion, 1.8% in 2005 and 2013 and 6.9% in 2015. The species Triatoma brasiliensis (n = 16,056) was the most captured, followed by Triatoma pseudomaculata (n = 14,811), Rhodnius nasutus (n = 3,764), Panstrongylus lutzi (n = 3,145) Triatoma petrocchiae (n = 182) and Panstrongylus megistus (n = 17). In the three mesoregions, adults and nymphs of Triatoma brasiliensis, Triatoma pseudomaculata and Rhodnius nasutus were found in the outdoor and indoor environments. The highest rate of natural infection by T. cruzi (32.1%) was observed in the Central mesoregion, while in the Agreste and Oeste mesoregions the indices were of 2.2% and 0.8%, respectively. The infestation, colonization and natural infection data alert to the possibility of vector transmission and indicate the need for continuous and systematic execution of entomological surveillance and vector control activities to prevent the transmission of the parasite in the state. |
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