This Program of Research and Scholarly Excellence is comprised of faculty, staff and graduate students from three Colorado State University departments and two colleges. It concentrates on better means to diagnose, treat and prevent through vaccination four categories of infections: (1) those caused by retroviruses, which cause AIDS and other diseases; (2) mycobacterial infections, which cause tuberculosis and other diseases; (3) vector-borne diseases, which through insect transmission cause encephalitis and other diseases worldwide; and (4) blood parasites, which are the major cause of disease in the world. Dr. Jonathan Carlson, Director.