Trachoma, flies and environmental factors in Burkina Faso.

The presence of flies is one of the earliest risk factors for trachoma and it has been suggested that flies could act as vectors for transmission of chlamydiae. A national trachoma survey was conducted in 1997 in Burkina Faso to (i) study the relationship between trachoma occurrence, flies, dirty faces and some environmental factors, and (ii) investigate the role of flies in the presence of trachoma. The country was stratified into eight groups of provinces and a random sample of 30 clusters was selected in each group. All children aged < 10 years were examined for the diagnosis of active trachoma (trachomatous inflammation which was follicular and/or intense) and the dirtiness of the face and the presence of flies on the face were recorded. The children's carers were questioned about the number of baths given and daily face-washing. Household heads were asked about ownership of cattle and small ruminants. The presence of latrines, a stable, and garbage collection inside the yard was noted. Among 16,514 children examined, 27.0% had active trachoma and 3.3% intense inflammatory trachoma. Flies were present on 11.2% of children's faces and 82.4% and 19.7% of these children had active and intense inflammatory trachoma, respectively. Among the 30.2% of children with dirty faces, 70.2% had active and 10.2% intense inflammatory trachoma. In multivariate analysis, at least one daily bath showed a protective effect on both active and intense inflammatory trachoma. Face-washing twice daily was found to be significantly protective for active trachoma in some regions. A strong association was demonstrated between the presence of flies and dirty faces (odds ratio = 334, 95% confidence interval 202-546). The presence of flies on children's faces, dirty faces and trachoma appeared to be strongly associated. Although the presence of flies may be a marker of socio-economic status and is probably linked with other trachoma risk factors, our data indicated that interventions targeting fly control should be an important issue in controlling trachoma.

[Etiologies of ocular and eyelid trauma in Burkina Faso]. / Etiologies des traumatismes oculo-palpébraux au Burkina Faso.

PURPOSE: To identify the epidemiological features of ocular traumas in Burkina Faso. METHODS: A retrospective study was conducted in the eye department of the National Hospital of Ouagadougou, from January 1995 to 31 December 1997. All cases of eye trauma during this period were included. RESULTS: The study showed that ocular traumas represented 9.80% of the reasons for consultation in the unit. 73% of the patients were male. The median age was 21. School children and students were the most frequently involved 25.8%) and 58.9% of the patients came from Ouagadougou while 41.1% came from the rural areas. Public thoroughfare accidents (were the main causes of the trauma (25%). Among the traumatic agents, 26% involved vegetal materials. CONCLUSION: Ocular traumas are a major cause of blindness in Western Africa and concern mostly young people. Prevention strategies based on education and information about road safety could reduce the incidence of ocular traumatisms.