Household pit latrines as a potential source of the fly Musca sorbens– a one year longitudinal study from The Gambia
Article first published online: 16 JUN 2005
Tropical Medicine & International Health
Volume 10, Issue 7, pages 706–709, July 2005
How to Cite
Emerson, P. M., Simms, V. M., Makalo, P. and Bailey, R. L. (2005), Household pit latrines as a potential source of the fly Musca sorbens– a one year longitudinal study from The Gambia. Tropical Medicine & International Health, 10: 706–709. doi: 10.1111/j.1365-3156.2005.01432.x
- Issue published online: 16 JUN 2005
- Article first published online: 16 JUN 2005
- Chrysomya albiceps;
- domestic flies;
- pit latrines;
- Musca domestica;
- Musca sorbens;
- The Gambia;
- toilet facilities;
Objectives To assess whether the trachoma vector Musca sorbens was breeding in household latrines in a trachoma-endemic part of The Gambia.
Methods Longitudinal study of flies emerging from 16 sentinel household latrines selected at random from a list of all latrines present in four Gambian villages. Latrines were surveyed and fly traps were set over the drop hole for 24 h once per month for a year.
Results All the sentinel latrines were of the ‘Gambian improved household latrine’ design, which has a cement slab but is not ventilated or fly-proofed. The latrines were all in regular use by a family, mean number of users per latrine 14.8 (SD 8.0, range 2–29). Of 55 351 flies caught in 192 catches 54 130 (97.8%) were Chrysomya albiceps, 690 (1.2%) Musca domestica, 466 (0.8%) Chrysomya regalis and 65 (0.1%) M. sorbens. Of the M. sorbens caught 61 (93.8%) were female.
Conclusions Gambian improved household pit latrines cannot be considered a source of the trachoma vector M. sorbens, and the promotion of pit latrines as a method to reduce M. sorbens is warranted. A large number of C. albiceps were caught emerging from the latrines, but this species is not considered to be of medical importance.