The phrase "tip of the iceberg" was used to describe not just one case but all the cases so far known in the population regarding AIDS. Linked evidence OXUH0002850 - Epidemiologic Aspects of the Current Outbreak of Kaposi's Sarcoma and Opportunistic Infections - 28 Jan 1982 Chronology Information Date: 28 January 1982 Chapter/issue Role of Government: Response to Risk