ArticlePLoS neglected tropical diseases2022
Yaws in the Philippines: A clinico-seroprevalence study of selected communities in Mindanao.
Article in PLoS neglected tropical diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 6 citations in OpenAlex.
- Seroprevalence and geospatial epidemiology of yaws: Evidence from Ghana.PLoS neglected tropical diseases · 2025Article
- UP-PGH Department of Dermatology: 100 Years of Skin Health Advocacy in the Service of the Filipino.Acta medica Philippina · 2024Article
- How to find a forgotten disease like yaws: Lessons from the Philippine experience.PLoS neglected tropical diseases · 2023Article
- Finding Yaws among Indigenous People: Lessons from Case Detection Surveys in Luzon and Visayas Island Groups of the Philippines.The American journal of tropical medicine and hygiene · 2023Article
- Stigma, psychosocial and economic effects of yaws in the Philippines: an exploratory, qualitative study.Tropical medicine and health · 2022Article
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Authors and funding
4 authors at 1 institution in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundYaws is a chronic, highly contagious skin and bone infection affecting children living in impoverished, remote communities. It is caused by Treponema pallidum subsp. pertenue. We report the prevalence of active yaws among elementary schoolchildren based on clinical and serological criteria in selected municipalities of Southern Philippines.
methodsFrom January to March 2017, exploratory cross-sectional surveys and screening of skin diseases were conducted in the Liguasan Marsh area of the provinces Maguindanao, Sultan Kudarat, and Cotabato. We included 9 municipalities and randomly selected one public elementary school per municipality. Members of students' households and the communities were also examined and treated. Yaws suspects and contacts had blood tests for treponemal and non-treponemal antibodies using Dual Pathway Platform and Treponema pallidum particle agglutination (TPPA) tests.
resultsA total of 2779 children and adults were screened for any skin disease: 2291 students, 393 household members, and 95 community members. Among 210 yaws suspects and contacts, 150 consented to serologic tests. The estimated prevalence of active yaws among schoolchildren screened was 1 out of 2291 (0.04%). Among 2532 children who were 14 years old and younger, 4 (0.2%) had active yaws. Eight adult household contacts and community members had latent yaws and 2 had past yaws. Five out of 9 municipalities were endemic for yaws.
conclusionsThis study confirmed that the Philippines is endemic for yaws but at a low level in the schools surveyed. This is an under-estimation due to the limited sampling. The lack of proper disease surveillance after the eradication campaign in the 1960's has made yaws a forgotten disease and has led to its resurgence. Yaws surveillance is needed to determine the extent of yaws in the Philippines and to help develop a strategy to eradicate yaws by 2030.
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