I work as Biostatistician and Epidemiologist in 2 Research centres focus on pulmonary diseases, One is concerned with Asthma, either in children or in Occupational Asthma produced by exposure to sensitizing agents at the work place. The other is focus on TB and in the factors influencing the development of the pulmonary system in children. We have conducted surveys based on general population, a given set of industries, a particular large industry, and schools in areas of different levels of pollution.