This programme has expanded rapidly during the last two years. In addition to studies on diarrhoea and pneumonia, scientists at the Centre now have major projects on tuberculosis, dengue, sexually transmitted infections and HIV/AIDS. Importantly, a new laboratory for the study of tuberculosis was completed with financial assistance from UNOCAL. The new laboratory is already producing important results characterizing the antibiotic sensitivity patterns of the strains of tuberculosis in Dhaka city and in Matlab. Furthermore, it is providing a detailed description of the incidence and prevalence of tuberculosis in Matlab, laying the groundwork for possible vaccine evaluations in the future. Also the laboratory will allow for studies on basic microbiology and immunology of tuberculosis.