Doença de chagas: índice de infestação, infecção de vetores transmissores do trypanosoma cruzi e o controle da doença no município de Combinado do Tocantins

Abstract

This work aims to perform a survey of the species of triatomines found, map the localities with the highest degree of infestation, know the index of vectors with infection of Trypanosoma cruzi. We also investigated its vector’s habitat preferences, predominant species, and lines of care for chagasic patients, available in the Unified Health System, in the Municipality of Combinado - TO. In this perspective, quantitative research was carried out, developed through manual collections of triatomines. A total of 408 household units were surveyed in 35 localities in the rural area of the municipality of Combinado, and 850 triatomes were collected. All captured samples were sent to the Entomology Laboratory of the Municipality of Combinado (TO), to perform taxonomic identification and parasitological examination. From the counting and identification of the collected insects, the indicators of infestation and infection were calculated. The data allowed to observe the predominance of the species Triatoma sordida (99.9%), following the species Rhodnus neglectus (0.01%). The collected species presented an infection index for the protozoan Trypanosoma cruzi of 1%. After identification and examination, the samples were sent to the Quality Control, Núcleo de Entomologia Médica Palmas (TO). In conversation with residents and according to the Notifiable Diseases Information System, it was perceived that there are no records of acute cases of chagas disease in the municipality, already in the second phase of the disease (chronic) the infection reached 12% of the residents, it is perceived that approximately 30% have already undergone tests for diagnosis of the disease which obtained non-reactive results, and 58% have never performed even one type of examination. This theme presents an important problem that still needs to be reflected and investigated. And this, has great relevance as a monographic work, an aspect that justifies the theme presented in the title of this, data Our results indicate the need for permanent epidemiological surveillance and continuous control measures against this vector insect.