A tale of two-component generalised HIV epidemics.

The author examines two complex generalised HIV epidemics that cover those who have multiple sexual partners and the large number of already infected individuals. He offers a further explanation of the generalised HIV epidemics, which reveal an important role for both components, as well as a basis for a unifying approach. He recommends several issues that might be prioritized to prevent HIV epidemics. The author also cites several structural approaches to HIV epidemic prevention.