<prompt> Indication for prophylaxis in pneumocystis carinii pneumonia includeCD4 count 200 ulTuberculosisVital load 25000 copiesmlOral candidiasis  <response>: Defects in cellular andor humoral immunity predispose to development of PCP. CD4 T cells are critical in host defense against Pneumocystis. For HIV-infected patients, the incidence is inversely related to the CD4 T cell count: at least 80 of cases occur at counts of 200 cellsmL, and most of these cases develop at counts of 100 cellsmL. Ref Harrison 19th edition pg 1017 