Stability and bifurcation for a multiple group model for the dynamics of HIV /AIDS transmission

Abstract

Abstract. This paper examines a multi-group epidemic model with variable population size. We show that even in the case of proportionate mixing, multiple endemic equilibria are possible. The significance of these results in the study of the dynamics of sexually-transmitted diseases is discussed. Key words. Acquired immunodeficiency syndrome (AIDS), Human immunodeficiency virus (HIV). Sexually transmitted diseases, proportionate mixin