Evaluation of the efficacy of insecticide-treated scarves to protect children from the trachoma vector Musca sorbens (Diptera: Muscidae): A phase II randomised controlled trial in Oromia, Ethiopia

Robinson, Ailie; Gomes, Laura Reis de Oliveira; Abdurahman, Oumer Shafi; Alemayehu, Wondu; Shuka, Gemeda; Melese, Ewunetu; Guye, Meseret; Legesse, Demitu; Elias, Eden; Temam, Kedir; Koro, Korso Hirpo; Adugna, Dereje; Seife, Fikre; Aga, Muluadam Abraham; Sarah, Virginia; Lambert, S. M.; Walker, Stephen L.; Habtamu, Esmael; Solomon, Anthony W.; Last, Anna; Macleod, David; Burton, Matthew; Logan, James G.

doi:10.1016/j.eclinm.2022.101487

Cited by 5 publications

(2 citation statements)

References 26 publications

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“…For example, Scrivener et al [8] demonstrated a 81.4% and 79.0% reduction in landing rates of the mixed wild M. domestica and M. vetustissima Walker within 1 m of the combined transfluthrin-and permethrin-treated glazed tiles and plywood, respectively. Similarly, permethrin-treated scarves reduced the exposure of fly-eye contact by 35% in a study conducted by Robinson et al [23]. These examples demonstrate that volatile pyrethroids can be used to protect points from M. domestica, by limiting their exposure in protected areas.…”

Section: Discussionmentioning

confidence: 71%

Point Protection with Transfluthrin against Musca domestica L. in a Semi-Field Enclosure

Aldridge,

Pagac,

Norris

et al. 2024

Insects

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House flies are notoriously difficult to control, owing to their tendency to live in close relationships with humans and their livestock, and their rapid development of resistance to chemical controls. With this in mind, we explored an alternative chemical control, a spatial repellent to deter Musca domestica L. from points we wanted to protect (i.e., a baited trap). Our results demonstrated that the synthetic spatial repellent, transfluthrin, is effective in preventing M. domestica adults from entering protected traps for both a susceptible strain (CAR21) and a field-acquired permethrin-resistant strain (WHF; 24 h LD50 resistance ratio of 150), comprising 22% and 28% of the total number of flies collected, respectively. These results are promising and demonstrate that transfluthrin can be an effective spatial repellent to protect points of interest where needed.

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Section: Discussionmentioning

confidence: 71%

Point Protection with Transfluthrin against Musca domestica L. in a Semi-Field Enclosure

Aldridge,

Pagac,

Norris

et al. 2024

Insects

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“…This is indicative that weight is important to fly contacts, with the lightest children experiencing the most contacts. In a previously reported study we observed that contacts decreased as age increased [ 32 ]. Those with lower bodyweight (children) are more likely to have ocular and nasal discharge, although here, the effect of bodyweight remains after controlling for discharge.…”

Section: Discussionmentioning

confidence: 99%

Field- and laboratory-based studies on correlates of Chlamydia trachomatis transmission by Musca sorbens: Determinants of fly-eye contact and investigations into fly carriage of elementary bodies

Robinson,

Versteeg,

Abdurahman

et al. 2024

PLoS Negl Trop Dis

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Musca sorbens (Diptera: Muscidae) flies are thought to be vectors of the blinding eye disease trachoma, carrying the bacterium Chlamydia trachomatis (Ct) between the eyes of individuals. While their role as vectors has been convincingly demonstrated via randomised controlled trials in The Gambia, studies of fly-borne trachoma transmission remain scant and as such our understanding of their ability to transmit Ct remains poor. We examined fly-eye contact and caught eye-seeking flies from 494 individuals (79% aged ≤9 years) in Oromia, Ethiopia. Ct-carrying flies (harbouring Ct DNA) were found to cluster spatially in and nearby to households in which at least one resident had Ct infection. Fly-eye contact was positively associated with the presence of trachoma (disease), lower human body weight and increased human body temperature. Studies of laboratory-reared M. sorbens indicated that Ct is found both externally and internally following feeds to Ct culture, with scanning electron microscopy revealing how Ct bodies can cling to fly hairs (setae). Testing for Ct on field-caught M. sorbens found fly ‘bodies’ (thorax, wings and abdomen) to consistently test positive for Ct while legs and heads were infrequently Ct-positive. These studies strongly support the role of M. sorbens as vectors of trachoma and highlight the need for improved understanding of fly-borne trachoma transmission dynamics and vector competence.

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Advanced visual sensing techniques for on-site detection of pesticide residue in water environments

Issaka

Wariboko

Johnson

et al. 2023

Heliyon

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Evaluation of the efficacy of insecticide-treated scarves to protect children from the trachoma vector Musca sorbens (Diptera: Muscidae): A phase II randomised controlled trial in Oromia, Ethiopia

Cited by 5 publications

References 26 publications

Point Protection with Transfluthrin against Musca domestica L. in a Semi-Field Enclosure

Point Protection with Transfluthrin against Musca domestica L. in a Semi-Field Enclosure

Field- and laboratory-based studies on correlates of Chlamydia trachomatis transmission by Musca sorbens: Determinants of fly-eye contact and investigations into fly carriage of elementary bodies

Advanced visual sensing techniques for on-site detection of pesticide residue in water environments

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