A two sex, susceptible-infective-susceptible (SIS), sexually-transmitted-disease (STD) model with two competing strains, where the females are divided into two different groups based on their susceptibility to two distinct pathogenic strains, is studied. The model appears to generate a monotone system, and thus it enables us to apply the theories for monotone systems to give a rather complete analysis for the global dynamical structure of the disease transmission. In particular, clear characterizations of competitive exclusion and coexistence are obtained

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Back to Mathematical Approaches for Emerging and Reemerging Infectious Diseases, May 17-21, 1999

  1998-1999 Mathematics in Biology