The risk of vector transmission of Trypanosoma cruzi remains high in the State of Paraná.

IF 2.5 4区医学 Q2 PARASITOLOGY

Memorias do Instituto Oswaldo Cruz Pub Date : 2024-06-10 eCollection Date: 2024-01-01 DOI:10.1590/0074-02760230226

João Vitor S Trovo, Michele Martha Weber-Lima, Bianca Prado-Costa, Giullia F Iunklaus, Andrey J Andrade, Thadeu Sobral-Souza, Renata L Muylaert, Larissa M Alvarenga, Max Jean O Toledo

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Abstract

Background: Monitoring and analysing the infection rates of the vector of Trypanosoma cruzi, that causes Chagas disease, helps assess the risk of transmission.

Objectives: A study was carried out on triatomine in the State of Paraná, Brazil, between 2012 and 2021 and a comparison was made with a previous study. This was done to assess the risk of disease transmission.

Methods: Ecological niche models based on climate and landscape variables were developed to predict habitat suitability for the vectors as a proxy for risk of occurrence.

Findings: A total of 1,750 specimens of triatomines were recorded, of which six species were identified. The overall infection rate was 22.7%. The areas with the highest risk transmission of T. cruzi are consistent with previous predictions in municipalities. New data shows that climate models are more accurate than landscape models. This is likely because climate suitability was higher in the previous period.

Main conclusion: Regardless of uneven sampling and potential biases, risk remains high due to the wide presence of infected vectors and high environmental suitability for vector species throughout the state and, therefore, improvements in public policies aimed at wide dissemination of knowledge about the disease are recommended to ensure the State remains free of Chagas disease.

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在巴拉那州，克鲁兹锥虫的病媒传播风险仍然很高。

背景：监测和分析导致南美锥虫病的克氏锥虫病媒的感染率有助于评估传播风险：监测和分析导致南美锥虫病的克氏锥虫病媒的感染率有助于评估传播风险：在 2012 年至 2021 年期间，对巴西巴拉那州的三蠹进行了研究，并与之前的研究进行了比较。这样做是为了评估疾病传播的风险：方法：根据气候和地貌变量建立生态位模型，预测病媒的栖息地适宜性，作为发生风险的替代指标：结果：共记录了 1 750 个三蠹标本，其中 6 个物种已被确认。总体感染率为 22.7%。克氏原蝽传播风险最高的地区与之前各城市的预测一致。新数据显示，气候模型比景观模型更准确。这可能是因为前一时期的气候适宜性更高：主要结论：尽管存在取样不均和潜在的偏差，但由于全州广泛存在受感染的病媒和病媒物种的高环境适宜性，风险仍然很高，因此，建议改进公共政策，广泛传播有关该疾病的知识，以确保全州无南美锥虫病。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Memorias do Instituto Oswaldo Cruz 医学-寄生虫学

CiteScore

5.00

自引率

3.60%

发文量

审稿时长

3-8 weeks

期刊介绍： Memórias do Instituto Oswaldo Cruz is a journal specialized in microbes & their vectors causing human infections. This means that we accept manuscripts covering multidisciplinary approaches and findings in the basic aspects of infectious diseases, e.g. basic in research in prokariotes, eukaryotes, and/or virus. Articles must clearly show what is the main question to be answered, the hypothesis raised, and the contribution given by the study. Priority is given to manuscripts reporting novel mechanisms and general findings concerning the biology of human infectious prokariotes, eukariotes or virus. Papers reporting innovative methods for diagnostics or that advance the basic research with these infectious agents are also welcome. It is important to mention what we do not publish: veterinary infectious agents research, taxonomic analysis and re-description of species, epidemiological studies or surveys or case reports and data re-analysis. Manuscripts that fall in these cases or that are considered of low priority by the journal editorial board, will be returned to the author(s) for submission to another journal.