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[NAIROBI] Facial cleanliness and environmental improvement could prevent trachoma, an eye disease which is common among the rural poor in regions such as Africa, Asia, Latin America and the Middle East, says a new study.

According to WHO, the disease affects more than 21.4 million people worldwide with 2.2 million becoming visually impaired and causing blindness in 1.2 million people.

The researchers analysed different studies on the effect of water, sanitation and hygiene (WASH) on trachoma.

“So parents especially, should be sure to wash their children's faces with water and soap at least once daily and use a towel to dry them.”

Matthew Freeman, Emory University, United States.

They searched studies conducted worldwide and published by 27 October 2013 from eight databases, including Embase, Web of Science, PubMed and Africa Index Medicus.

Most of the articles were from studies conducted in Sub-Saharan Africa countries, including Ethiopia, Malawi, Mali, Mozambique, Niger, Nigeria, Senegal, South Sudan and Tanzania.

According to the study published in PLOS Medicine on 25 February, the findings based on 86 articles suggested that whereas all components of WASH could reduce the risk of trachoma infection, improved personal hygiene had the greatest impact.

The WHO says that the bacterium which causes trachoma — Chlamydia trachomatis — could be transmitted through contact with infected eye discharges, especially by touching handkerchiefs and through its spread by eye-seeking flies.

Matthew Freeman, a co-author of the study and an assistant professor of environmental health at the US-based Emory University, says that they identified specific hygiene measures that are effective for trachoma prevention, including facial cleaning, soap and towel use and daily bathing.

“So parents especially, should be sure to wash their children's faces with water and soap at least once daily and use a towel to dry them,” he tells SciDev.Net.

The researchers note in the journal: “Current advice tends to focus on washing faces with clean water, but use of soap appears to be more effective”. Freeman adds that organisations promoting hand washing with soap to prevent diarrhoea in

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