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The prevalence of scabies, pyoderma and other communicable dermatoses in the Bijagos Archipelago, Guinea-Bissau

Article scientifique 2019 Anglais

Résumé

Abstract Introduction Skin diseases represent a significant public health problem in most low and middle income settings. Nevertheless, there is a relative paucity of high-quality epidemiological data on the prevalence of these conditions. Materials/methods We conducted two cross-sectional population-based skin-surveys of children (6 months to 9 years old) in the Bijagós Archipelago of Guinea-Bissau during the dry season (February-March 2018) and the wet season (June-July 2018). Following a period of training, a nurse performed a standardised examination for communicable dermatoses for each participant. We calculated the prevalence of each skin condition and investigated demographic associations. Results 1062 children were enrolled in the dry season survey of whom 318 (29.9%) had at least one skin diseases. The most common diagnosis was tinea capitis (154/1062, 14.5% - 95% CI 12.5-16.8%) followed by tinea corporis (84/1062, 7.9% - 95% CI 6.4-9.7%), pyoderma (82/1062, 7.7% - 95% CI 6.2-9.5%) and scabies (56/1062. 5.2% - 95%CI 4.0 – 6.8%). 320 children were enrolled in the wet season survey of whom 121 (37.8%) had at least one skin problem. Tinea capitis remained the most common diagnosis (79/320, 24.7% - 95% CI 20.1 – 29.9%), followed by pyoderma (38/320, 11.9% - 95% CI 8.6-16.1%), tinea corporis (23/320, 7.2% - 95% 4.7 – 10.7%) and scabies (6/320, 1.9% - 95% CI 0.8-4.2%). Conclusions Our study, which utilised robust population-based cluster random sampling methodology, demonstrates the substantial disease burden caused by common communicable dermatoses in this setting. Given these findings, there is a need to consider common dermatoses as part of Universal Health Coverage to deliver ‘skin-health for all’. Author Summary Skin conditions are very common in many low and middle income settings but there have been relatively few surveys of skin disease conducted using the best epidemiological approaches. We performed two cross-sectional population-based skin-surveys of children in the Bijagós Archipelago, Guinea-Bissau, using gold-standard sampling methodologies. Skin conditions were extremely common and almost 30% of children had at least one common, infectious skin condition in both surveys. Fungal skin and scalp infections were the most common conditions followed by bacterial skin infections. Our survey demonstrates that common, easily treatable skin conditions are responsible for a high burden of disease in this population. Skin-health should be considered a key component of the Universal Health Coverage agenda.

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Marks, M., Sammut, T., Cabral, M., Silva, E., Gonçalves, A., Rodrigues, A., Manjuba, C., Nakutum, J., Ca, J., D’Alessandro, U., Achan, J., Logan, J., Bailey, R., Mabey, D., Last, A., Walker, S. (2019). The prevalence of scabies, pyoderma and other communicable dermatoses in the Bijagos Archipelago, Guinea-Bissau. https://doi.org/10.1101/19000257

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