Dear Members List: I need to give a class about :the "Uses of Epidemiology in Public Health". I was reading about it and it is a lot of topics; could you help me and advise me what is the most important, or may be which will be the steps o tips in this conference?,. I think the meaning is only one in the world, but in different countries, perhaps some topics of this big theme have more relevance. Don't you think so? . I will be waiting with much expectancy your answer. Thanks, Sincerely. Dr. Diana Rodriguez. Faculty of Medicine "Universidad Peruana Cayetano Heredia" Lima, Peru.