by Joshua V. Garn, Sophie Boisson, Rebecca Willis et al.
PLoS Negl Trop Dis 12(1): e0006110 –22 January 2018
Facial cleanliness and sanitation are postulated to reduce trachoma transmission, but there are no previous data on community-level herd protection thresholds. The authors characterize associations between active trachoma, access to improved sanitation facilities, and access to improved water sources for the purpose of face washing, with the aim of estimating community-level or herd protection thresholds. They conclude that their study provides insights into the community water and sanitation coverage levels that might be required to best control trachoma. The results suggest access to adequate water and sanitation can be important components in working towards the 2020 target of eliminating trachoma as a public health problem.