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Updated: Feb 9, 2026

Simple Homemade Tools to Handle Fruit Flies—Drosophila melanogaster
Published on: July 24, 2019
A simple method for assessment of association between synanthropic flies and trachoma
1International Center for Epidemiology and Preventive Ophthalmology, Wilmer Institute, Johns Hopkins University, Baltimore, Maryland 21205.
Abstract:
In some areas of endemic trachoma, muscoid flies may play a significant role in transmission of this serious eye infection. A simple and practical method of quantifying the relative household density of synanthropic flies has been developed for use in epidemiological field surveys. The method uses two boards moistened with a 10% sucrose solution. The fly scores showed good reproducibility at the same sampling site during the day and on different days. The only flies identified were Musca sorbens, showing their local density and a significant association of this fly with the presence of inflammatory trachoma in children.
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