Trachoma campaign materials: Vietnamese poster This poster, which is about good practice in the prevention of trachoma transmission, has been pinned on the outside of the reception room of a local health centre in Vietnam. The poster below the reception room sign shows a boy using water from a well to wash his face. This promotes the facial cleanliness message. It emphasises the need to reduce transmission via contaminated fomites such as face cloths. The slogan on the poster says 'wash your face clean with your own handkerchief'.