Lileia Diotaiuti

Lileia Diotaiuti
Fundação Oswaldo Cruz | FIOCRUZ · Centro de Pesquisas René Rachou (CPqRR) - Fiocruz Minas

About

223
Publications
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Publications

Publications (223)
Article
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Background After decentralizing the actions of the Chagas Disease Control Program (CDCP) in Brazil, municipalities were now responsible for control measures against this endemic, supervised by the Regional Health Superintendencies (RHS). We aimed to evaluate the recent entomological surveillance of Chagas disease in the Regional Health Superintende...
Article
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The multiplicity of epidemiological scenarios shown by Chagas Disease, derived from multiple transmission routes of the aetiological agent, occurring on multiple geo-ecobiosocial settings determines the complexity of the disease and reveal the difficulties for its control. From the first description of the link between the parasite, the vector and...
Article
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Editorial - Response to Chagas disease in Brazil: strategic milestones for achieving comprehensive health care
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Background: Chagas disease (CD) is caused by the flagellate protozoan Trypanosoma cruzi and can be carried by different species of triatomines, including Rhodnius neglectus, which is wild, well distributed in Brazil, and has formed colonies in palm trees located in urban areas of municipalities in the state of São Paulo. Chemical control has been...
Article
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Introduction: Since 2013, major Cimex lectularius infestations have been detected in public shelters in Belo Horizonte (Brazil). Due to this, insecticide resistance has been investigated as one of the possible causes for the failure to control bedbugs. Methods: Cimicids were subjected to bioassays according to the World Health Organization recom...
Article
Control of Chagas disease in endemic countries is primarily accomplished through insecticide spraying for triatomine vectors. In this context, pyrethroids are the first-choice insecticide, and the evolution of insect resistance to these insecticides may represent an important barrier to triatomine control. In insects, cytochrome P450s are enzymes i...
Article
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The Rhodniini tribe is one of the five tribes in the subfamily Triatominae and is notorious for its domestic blood-sucking pests and vectors of Trypanosoma cruzi across Latin America. The human and economic costs of the Chagas disease in the American tropics are considerable, and these insects are of unquestionable importance to humans. We used mit...
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The 2030 Agenda for Sustainable Development is a plan of action for people, planet and prosperity. Thousands of years and centuries of colonisation have passed the precarious housing conditions, food insecurity, lack of sanitation, the limitation of surveillance, health care programs and climate change. Chagas disease continues to be a public healt...
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Background: Triatoma brasiliensis Neiva, 1911 is the main vector of Trypanosoma cruzi in the caatinga of Northeastern Brazil. Despite of its epidemiological relevance, there are few studies on its genetic variability. Using microsatellite markers, we characterized the variability and dynamics of infestation and reinfestation of T. brasiliensis aft...
Article
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The northeastern semiarid region stands out in the Brazilian context regarding the eco-epidemiology of Chagas disease, in which Triatoma brasiliensis is the main vector of Trypanosoma cruzi. Persistent house invasion threatens the relative levels of progress achieved over previous decades. We conducted an intervention trial with a five-year follow-...
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Introduction: The ecoepidemiological situation in the State of Rio Grande do Norte, Brazil is characterized by frequent invasion and colonization of domiciliary units (DUs) by several triatomine species, with high rates of natural infection by Trypanosoma cruzi. METHODS: We evaluated the possibility of vector transmission of T. cruzi based on reco...
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Background Knowledge of triatomine food sources in different ecotopes enables the estimation of T. cruzi transmission risk in diverse environments, as well as its dynamics of dispersion and ecological niche. For Triatoma brasiliensis in the Caatinga, in the northeast of Brazil, seasonal differences influence feeding eclecticism and rates of T. cru...
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We report the first known occurrence of Psammolestes tertius Lent & Jurberg, 1965 (Hemiptera, Reduviidae, Triatominae) in the state of Rio Grande do Norte, Brazil. In 2009 and 2017, 2 adult specimens, a female and a male respectively, were collected at the Seridó Ecological Station, which is located in the municipality of Serra Negra do Norte. Thes...
Article
Psammolestes tertius Lent & Jurberg 1965 is a triatomine species part of the tribe Rhodniini. It is only wild and found in bird nests, mostly of the Furnariidae family. This work describes the amazing infestation of a nest of Pseudoseisura cristata in the municipality of Taua, Ceará. The nest harbored a colony with about 40 specimens of P. tertius...
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Background Chemical control with pyrethroid insecticides has been effective in reducing endemic areas of distribution of Triatoma infestans in the Southern Cone, as well as Bolivia; this had considerably reduced the infestation of households in a large part of the territory. Nowadays, areas such as the Chaco and the Inter-Andean Valleys are regions...
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Background Insecticide spraying efficiently controls house infestation by triatomine bugs, the vectors of Trypanosoma cruzi. The strategy, however, is ineffective against sylvatic triatomines, which can transmit Chagas disease by invading (without colonizing) man-made structures. Despite growing awareness of the relevance of these transmission dyna...
Data
Raw data. Municipality names, numbers of house-invading bugs, regional covariate (Amazon, %), landscape covariates (Preserved, Intermediate, Disturbed, %; NDVI, no units), climate covariates: temperature (Day, Night, ΔT, in °C) and rainfall (Rain, in mm), confounders (inhabited Houses, Human Development Index [HDI], % Poverty), and external validat...
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Model-averaged estimates of covariate effects on house invasion by four sylvatic triatomine species: Poverty-adjusted model sets. Circles, regional-scale covariate (Amazon); diamonds, landscape-scale covariates (Preserved, Intermediate, Disturbed, NDVI); squares, climate covariates (Day, Night, ΔT, Rain; Rain2, quadratic Rain term; Rain*, estimate...
Data
Panstrongylus geniculatus negative binomial generalized linear models. Model-averaged coefficients, unconditional standard errors (SE), and 95% confidence interval limits (CIlower, CIupper) from 89 models fitted for this species. (PDF)
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Mapped values of covariates and confounders. The maps show the limits of the 139 municipalities of Tocantins; darker shades indicate larger values. See also S1 Data. (PDF)
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Rhodnius robustus zero-inflated negative binomial generalized linear models. Model-averaged coefficients, unconditional standard errors (SE), and 95% confidence interval limits (CIlower, CIupper) from 219 models fitted for this species. (PDF)
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External model validation. Frequency histograms of the differences between model-averaged predictions and independent 2014–2016 data for each species. Inset maps show model-predicted and independent validation data (on a per-year basis) in each municipality (scale as in Figs 2 and 4); see also S1 Data. ZINB, zero-inflated negative binomial and NB,...
Data
The complete model sets. For each species, we present all models, grouped by category, as well as their structure, number of parameters (K), and performance metrics including AICc, ΔAICc, Akaike weights (individual and cumulative [CumWt]), and log-likelihood (LL). Model-averaged predictions and independent validation data (2014–2016, on a per-year...
Data
Covariates and confounders. Categories, units, names, and summary statistics of covariates and confounders over the 139 municipalities of Tocantins, Brazil. (PDF)
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Rhodnius pictipes zero-inflated negative binomial generalized linear models. Model-averaged coefficients, unconditional standard errors (SE), and 95% confidence interval limits (CIlower, CIupper) from 139 models (123 without convergence issues) fitted for this species. (PDF)
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Rhodnius neglectus negative binomial generalized linear models. Model-averaged coefficients, unconditional standard errors (SE), and 95% confidence interval limits (CIlower, CIupper) from 87 models fitted for this species. (PDF)
Article
BACKGROUND Triatoma sordida and Triatoma pseudomaculata are frequently captured triatomine species in the Brazilian savannah and caatinga biomes, respectively, and in Brazilian domiciles. OBJECTIVES This study identified eco-epidemiological changes in Chagas disease in northern Minas Gerais state, Brazil, and considered the influence of environment...
Article
Triatoma costalimai Verano & Galvão, a little-known vector of Trypanosoma cruzi Chagas, occupies rocky environments in the Brazilian Cerrado and occasionally infests man-made habitats. Entomological surveillance records show that T. costalimai occurs fairly often inside and around houses in south-eastern Tocantins, Brazil, with 859 specimens report...
Article
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Triatomines are blood-sucking insects that transmit the causative agent of Chagas disease, Trypanosoma cruzi. Despite being recognized as a difficult task, the correct taxonomic identification of triatomine species is crucial for vector control in Latin America, where the disease is endemic. In this context, we have developed a web and mobile tool...
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Background Triatoma infestans is the main vector of Trypanosoma cruzi in Bolivia. The species is present both in domestic and peridomestic structures of rural areas, and in wild ecotopes of the Andean valleys and the Great Chaco. The identification of areas persistently showing low and high house infestation by the vector is important for the manag...
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Triatoma infestans is an insect of subfamily Triatominae (Hemiptera: Reduviidae) and an important vector of Trypanosoma cruzi, the etiologic agent of human Chagas disease. In this work we reported a transcriptome assembly and annotation of T. infestans heads obtained by Next Generation Sequencing (NGS) technologies.
Article
Em 2010 foi criada no Brasil, pelo Ministério da Saúde e pelo Laboratório de Referência em Triatomíneos e Epidemiologia da Doença de Chagas da Fundação Oswaldo Cruz a “Rede de Monitoramento da Resistência de Triatomíneos aos Inseticidas” com vistas a: 1) caracterizar e monitorar a suscetibilidade/resistência das populações triatomínicas brasileiras...
Article
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Resumo A participação comunitária é a principal estratégia para a manutenção da vigilância entomológica da doença de Chagas. O objetivo deste estudo foi avaliar conhecimentos sobre triatomíneos e a doença de Chagas entre moradores de oito localidades de Diamantina, Minas Gerais, atentando a uma eventual relação entre os conhecimentos e a infestação...
Article
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Triatoma sordida is a species that transmits Trypanosoma cruzi to humans. In Brazil, T. sordida currently deserves special attention because of its wide distribution, tendency to invade domestic environments and vectorial competence. For the planning and execution of control protocols to be effective against Triatominae, they must consider its popu...
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Background: A number of studies published during the last 15 years showed the occurrence of insecticide resistance in Triatoma infestans populations. The different toxicological profiles and mechanisms of resistance to insecticides is due to a genetic base and environmental factors, being the insecticide selective pressure the best studied among t...
Data
Fig 1 zoomed on rectangle C, over the Chaco province (Argentina) where a concentrated group of 5 highly resistant T. infestans populations (Log (LD50) > 2.6) (red circles) were not identified by the GLM based on environmental variables. (TIF)
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Fig 1 zoomed on rectangle B, over the Potosi Department (Bolivia) where two highly resistant T. infestans populations (Log (LD50) > 2.6) (red circles) are correctly identified by the GLM based on environmental variables. (TIF)
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Fig 1 zoomed on rectangle A, over the area where most of highly resistant T. infestans populations (Log (LD50) > 2.6) (red circles) and the intermediate cytogenetic group (red stars) are found. (TIF)
Data
Compiled database of studies on Triatoma infestans susceptibility to synthetic pyrethroids. All studies used topical application of 0,2 μL of the active ingredient on age and weight standardized first instar nymphs produced by adults collected on domestic, peridomestic or sylvatic ecotopes. PAHO, Z&P and WHO columns contains the binary codes (0, 1)...
Data
Relation between RR50 and LD50 of 145 T. infestans populations. Red circles: data reported by Germano et al [20, 32, 36], Carvajal et al [23] and Picollo et al [30], linear function is RR50 = -2.02 + 7.53 LD50, R2 = 0.99, n = 33; black circles: data reported by the rest of the authors reported in the compiled database (S1 Table), linear function is...
Article
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Reports of triatomine infestation in urban areas have increased. We analysed the spatial distribution of infestation by triatomines in the urban area of Diamantina, in the state of Minas Gerais, Brazil. Triatomines were obtained by community-based entomological surveillance. Spatial patterns of infestation were analysed by Ripley’s K function and K...
Article
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Increasing reports of high-resistant Triatominae populations concerns scientists and sanitarians as little is known about the factors behind the occurrence of such phenotype and its real impact on vector control strategies. Moreover, the utilization of a large variety of methodologies hinder the comparison of the reported studies. This work aims to...
Article
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Triatomines (Hemiptera, Reduviidae) are vectors of Trypanosoma cruzi, the causative agent of Chagas disease, one of the most important vector-borne diseases in Latin America. This study compares the environmental niche spaces of Triatoma brasiliensis and Triatoma melanica using ecological niche modelling and reports findings on DNA barcoding and wi...
Article
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Background: Over the last few decades, pyrethroid-resistant in Triatoma infestans populations have been reported, mainly on the border between Argentina and Bolivia. Understanding the genetic basis of inheritance mode and heritability of resistance to insecticides under laboratory conditions is crucial for vector management and monitoring of insec...
Article
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The goal of this work was to explore the thermal relationship between foraging Triatoma brasiliensis and its natural habitat during the hottest season in the state of Ceará, Brazil. The thermal profiles were determined using infrared analysis. Although the daily temperature of rock surfaces varied in a wide range, T. brasiliensis selected to walk t...
Article
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Despite chemical and physical vector control strategies, persistent infestations of Triatoma sordida have been reported in a large part of Minas Gerais, Brazil, and the cause for this is little investigated. We aimed to characterize the deltamethrin toxicological profile in peridomestic T. sordidapopulations from Triângulo Mineiro area of Minas Ger...
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Despite the recommendations by interpretation of resistance ratios obtained in laboratory bioassays, little is known about the actual impact of these results in the effectiveness of vector control activities in the field. In this context, our objective was to determine the mean value of different resistance ratios obtained by laboratory bioassays p...
Article
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In the last 15 years, different types of Triatominae resistance to different insecticides have been reported; thus, resistance may be more widespread than known, requiring better characterization and delimitation, which was the aim of this review. This review was structured on a literature search of all articles from 1970 to 2015 in the PubMed data...
Article
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Palms are ubiquitous across Neotropical landscapes, from pristine forests or savannahs to large cities. Although palms provide useful ecosystem services, they also offer suitable habitat for triatomines and for Trypanosoma cruzi mammalian hosts. Wild triatomines often invade houses by flying from nearby palms, potentially leading to new cases of hu...
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