Toxoplasmosis (pyrimethamine, sulfadiazine, or clindamycin). Cryptococcosis (fluconazole). Candidiasis (ketoconazole). Herpes simplex virus (acyclovir). Mycobacterium avium (isoniazid, clofazimine, amikacin, rifampin, rifabutin, ethambutol, or other drug with written permission of the sponsor).