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Common Bed Bugs: Non-Viable Hosts for Parasites.
Cells
December 2024
Department of Biological Sciences, Simon Fraser University, Burnaby, BC V5A 1S6, Canada.
The hemoflagellate parasite is transmitted by triatomine kissing bugs and may co-infect humans together with its Chagas disease-causing congener . Using real-time quantitative polymerase chain reaction (RT-qPCR) and antimicrobial assays, we studied () the temporal and spatial distribution of in common bed bugs, , following oral ingestion and hemocoelic injection of and () the immune responses of bed bugs induced by infections. Irrespective of infection mode, no live were present in the bed bugs' hemolymph, salivary glands, or feces.
View Article and Find Full Text PDFOdor masking to decrease the attraction of Triatoma infestans (Hemiptera: Reduviidae, Triatominae), a Chagas disease vector, towards a host.
Acta Trop
December 2024
Laboratorio de Estudio de la Biología de Insectos, Centro de Investigación Científica y de Transferencia Tecnológica a la Producción (CICYTTP - CONICET), Diamante, Entre Ríos, Argentina; Facultad de Ingeniería, Universidad Nacional de Ente Ríos, Entre Ríos, Argentina. Electronic address:
Chagas disease, vectored by kissing bugs, poses a public health problem across the Americas. The best way for reducing disease transmission is through vector control, which is currently based on the use of insecticides. However, insecticide resistance, and environmental and health issues, stress the need for new, environmentally-friendly methods for reducing vector-host contacts.
View Article and Find Full Text PDFGenome report: First whole genome sequence of Triatoma sanguisuga (Le Conte, 1855), vector of Chagas disease.
G3 (Bethesda)
December 2024
Department of Entomology and Wildlife Ecology, University of Delaware, Newark, DE 19716, USA.
Article Synopsis
- Triatoma sanguisuga, the most common triatomine bug in the US, carries the parasite Trypanosoma cruzi, responsible for Chagas disease, although diagnoses are rare in the country.
- The study presented the first complete genome sequence of T. sanguisuga, obtained from a specimen in Delaware, revealing a genome size of 1.162 Gbp with high assembly quality, evidenced by a 99.1% BUSCO score.
- This genomic information can enhance understanding of triatomine bugs in colder climates and support public health initiatives for managing vector-borne diseases.
First Report of Rhodnius stali Lent, Jurberg, and Galvão 1993 (Hemiptera: Reduviidae: Triatominae) Naturally Infected by Trypanosoma cruzi in Concepción Department, Paraguay.
Am J Trop Med Hyg
December 2024
Centro para el Desarrollo de la Investigación Científica, Asunción, Paraguay.
Article Synopsis
- Most triatomine bugs are found in the nests of vertebrates, often near palm trees, with some species living in human habitats and capable of spreading Chagas disease.
- A specimen identified as Rhodnius stali was discovered in northeastern Paraguay and tested positive for Trypanosoma cruzi, marking a new first for the species in the country.
- This finding highlights the need for enhanced surveillance and vector control measures to address the potential spread of Chagas disease in Paraguay.
Unusual frequency of Trypanosoma cruzi DTU TcI and predominance of hybrid lineages in Triatoma infestans before and after control interventions in the Argentinian Chaco.
Acta Trop
January 2025
Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Laboratorio de Eco-Epidemiología. Intendente Güiraldes 2160, Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires. Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina. Electronic address:
Transmission of Trypanosoma cruzi involves diverse hosts, vectors and parasitic genotypes, in different environments. In recent decades, the distribution of T. cruzi has altered due to urbanization of affected people and vectors.
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