The core group revisited: the effect of partner mixing and migration on the spread of gonorrhea, Chlamydia, and HIV.


A set of differential equations are used to model the spread of sexually transmitted diseases (STDs) in a one-sex population that includes a core group of highly sexually active subjects. The effects of partner mixing between groups and migration to and from the core on the equilibrium number of infected are shown for gonorrhea, chlamydia, and HIV. The STDs… (More)