Models for Sexually Transmitted Diseases with Recruitment

Models are formulated for the spread of a sexually transmitted disease in a core population of sexually very active members who are recruited from a larger meta-population of less sexually active individuals. The recruitment rate is assumed to depend on the perceived prevalence of disease in the core population. Two different situations are considered. One is for a fatal disease (such as AIDS) with homosexual transmission, a one-sex model for which some results are outlined. The second is for a disease with recovery (such as gonorrhea) with heterosexual transmission, a two-sex model for which some preliminary partial results are obtained.