In modelling sexually transmitted diseases, it is standard to divide the population into a very active core group and a larger but much less active noncore group. Transitions between these two groups may be affected by the prevalence of disease in the core group. There may be a time-lag in this effect, and we explore the relation between such a time-lag and the stability of an endemic equilibrium. (C) 2000 Elsevier Science Ltd.
- Recruitment disease models
- Time lags
ASJC Scopus subject areas
- Modeling and Simulation
- Computer Science Applications