Improved detection of house infestations with triatomines using sticky traps: a paired-comparison trial in the Argentine Chaco
| Autor: | Ricardo E. Gürtler, Alejandra Alvedro, María C. Cecere, Mariano Alberto Laiño, Gustavo Fabián Enriquez, María Sol Gaspe, Marta Victoria Cardinal, Julián A. Alvarado-Otegui |
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| Rok vydání: | 2020 |
| Předmět: |
Rural Population
0301 basic medicine Chagas disease Insecticides Veterinary medicine 030231 tropical medicine Argentina Paired comparison Early detection Biology medicine.disease_cause lcsh:Infectious and parasitic diseases 03 medical and health sciences 0302 clinical medicine Extant taxon parasitic diseases Detection methods Pyrethrins Triatoma infestans Infestation medicine Animals Humans lcsh:RC109-216 Triatoma Nymph Triatominae Aerosols Surveillance Research Neglected Diseases biology.organism_classification Blood meal Vector control Insect Vectors Cross-Sectional Studies 030104 developmental biology Infectious Diseases Housing Parasitology |
| Zdroj: | Parasites & Vectors Parasites & Vectors, Vol 13, Iss 1, Pp 1-10 (2020) |
| ISSN: | 1756-3305 |
| DOI: | 10.1186/s13071-020-3891-z |
| Popis: | Background We conducted a matched-pairs trial of three methods for detecting house infestation with triatominae bugs in a well-defined endemic rural area in the Argentine Chaco. Methods The three methods included a simple double-sided adhesive tape (ST) installed near host resting sites; timed-manual collections with a dislodging aerosol (TMC, the reference method used by vector control programmes), and householders’ bug notifications (HN). Triatomine infestations were evaluated in 103 sites of 54 houses, including domiciles, kitchens and storerooms. Results In domiciles where Triatoma infestans was collected, sensitivity of each single method decreased from 79% by ST and 77% by HN, to 57% by TMC, and increased to 92% when ST was combined with HN. In peridomestic kitchens and storerooms, TMC was relatively as sensitive as ST and significantly more sensitive than HN. On average, the number of bugs recovered by ST was 0.94 times that collected by TMC. The ST mainly collected early-instar nymphs whereas TMC yielded late (larger) stages. Triatomines caught by ST had significantly lower mean weight-to-length ratios and lower blood-feeding rates than those caught by TMC, suggesting the ST intercepted and trapped vectors seeking a blood meal host. Conclusions The ST may effectively replace TMC for detecting T. infestans in domiciles, and is especially apt for early detection of low-density domestic infestations in the frame of community-based surveillance or elimination programmes; decision making on whether an area should be targeted for full-coverage insecticide spraying, and to corroborate that extant conditions are compatible with the interruption of vector-borne transmission. |
| Databáze: | OpenAIRE |
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