Results: 1100

Implementação de um sistema de vigilância-resposta de vetores para o controle da doença de Chagas: um ensaio de campo de 4 anos na Nicarágua
Implementing a vector surveillance-response system for chagas disease control: a 4-year field trial in Nicaragua

Infect. dis. poverty; 6 (18), 2017
Abstract Background: Chagas disease is one of the neglected tropical diseases (NTDs). International goals for its control involve elimination of vector-borne transmission. Central American countries face challenges in establishing sustainable vector control programmes, since the main vector, Triatoma dim...

A methodology based on insecticide impregnated filter paper for monitoring resistance to deltamethrin in Triatoma infestans field populations

Med. vet. entomol; 31 (4), 2017
The domiciliary presence of Triatoma infestans (Klug) (Hemiptera: Reduviidae) after control interventions was reported in recent years. Toxicological studies showed high levels of resistance to pyrethroids suggesting resistance as one of the main causes of deficient control. The aim of the present study ...

Drivers of house invasion by sylvatic Chagas disease vectors in the Amazon-Cerrado transition: A multi-year, state-wide assessment of municipality-aggregated surveillance data

Plos negl. trop. dis; 11 (11), 2017
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 awarenes...

Transcriptome Analysis of the Triatoma infestans (Hemiptera: Reduviidae) Integument

J. med. entomol; 54 (6), 2017
The insect integument, formed by the cuticle and the underlying epidermis, is essential for insect fitness, regulation of lipid biosynthesis and storage, insect growth and feeding, together with development progress. Its participation in insecticide resistance has also been outlined. Triatoma infestans K...

The Botanical Monoterpenes Linalool and Eugenol Flush-Out Nymphs of Triatoma infestans (Hemiptera: Reduviidae)

J. med. entomol; 54 (5), 2017
Monoterpenes are the main components of essential oils. Some members of this chemical family present insecticidal activity. Triatoma infestans (Klug) is the main vector of Chagas disease in Argentina, Bolivia, Paraguay, and Perú. The objective of this work was to evaluate the effect of six monoterpenes ...

Systemic insecticide treatment of the canine reservoir of Trypanosoma cruzi induces high levels of lethality in Triatoma infestans, a principal vector of Chagas disease

Parasit & Vectors; 10 (344), 2017
Background Despite large-scale reductions in Chagas disease prevalence across Central and South America, Trypanosoma cruzi infection remains a considerable public health problem in the Gran Chaco region where vector-borne transmission persists. In these communities, peridomestic animals are major blood-m...

Simulations of a logistic-type model with delays for Chagas disease with insecticide spraying

This work studies and numerically simulates a logistic-type model for the dynamics of Chagas disease, which is caused by the parasite T. cruzi and affects millions of humans and domestic mammals throughout rural areas in Central and South America. A basic model for the disease dynamics that includes inse...

Aspectos epidemiológicos e clínicos da Doença de Chagas aguda no Brasil e na américa Latina

surgindo em um cenário não habitual, relacionado com a forma de transmissão. Atualmente, a transmissão por via oral envolvendo alimentos contaminados é a principal via de infecção humana, com surtos em toda a América Latina. Entre os sintomas da fase aguda, destacam-se febre prolongada, quase sem...

Epidemiologia no século XXI e aspectos clínicos da Doença de Chagas crônica

A doença de Chagas, em sua forma crônica, apresenta atualmente espectro epidemiológico amplo por causa das correntes migratórias oriundas dos países onde é endêmica. Além disso, o quadro clínico da forma crônica deve ser bem caracterizado, por conta do acometimento predominante dos aparelhos ca...

Patogênese da Doença de Chagas na era atual - microrganismos e micropartículas

A presente revisão descreve os principais achados anatomopatológicos que caracterizam a cardiopatia chagásica crônica, discute a teoria autoimune e parassimpaticopriva que dominaram a explicação patogenética nas ultimas décadas e propõe novos caminhos a partir de achados mais recentes. Esses ach...