As we can witness through history, many professions have combined their efforts to save human lives, Credit should be given to all the disciplines involved in those historical times. No specialty area could relax in hope that its counterpart would do all the work. Without strong sup port for the practice of the use of numerical methods, evolving in the use of statistical methods, public health would not have been able to "get their arms around" disease Ironically, many urban communities are once again immigration, the confronted by crises precipitated by of the poor. The pre- threat of infection, and the illnesses med solution must encompass the use of statistics through research, the attention of epidemiology, and the dedica on of nurses. The evolution of numerical methods used in research helped us to gain a thorough understanding of disease etiology. A full team effort among plines will be needed to re-address the newly emerging issue of TB, among other infectious diseases,