<prompt> Mass treatment is used in following diseases except:YawsPolioTrachomaFilariasis  <response>: MASS TREATMENT - All people in community are administered with drugs whether they have the disease or not. - The mass treatment is used in control Yaws, Pinta, Bejel, Trachoma Filariasis. - The existence of at least 4-5 cases of latent infection for each clinical case of active disease in the community is rationale for it. - Patients with a latent incubating infection may develop disease at any time. In such cases, mass treatment is a critical factor in the interruption of disease transmission. 