during the past three years , an epidemic of acquired immunodeficiency syndromes ( aids ) involving the presence of specific forms of cancer ( notably kaposi 's sarcoma ) and infection ( e.g. , pneumocystis carinii ) ordinarily seen only in severely immunosuppressed hosts has occurred among active homosexuals , haitian immigrants , drug users , and hemophiliacs in large cities in the united states and elsewhere .
C0036220
kaposi 's
C0009450
infection