Journal of Petrochemical Universities
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The Backward Bifurcation of a Kind of Two-Strain Epidemic  Model With Vaccination
XIE Li-hong, SONG Dai-cai
Abstract328)      PDF (999KB)(345)      
A kind of two-strain SEIJV epidemic model with two-strain and vaccination was set up. This vaccine provides complete against strain 2, but only partial against strain 1 or the vaccinated individual may be infected by strain 1. It is also assumed that strain 1 can mutate into stran 2 at a rate. The reproduction numbers of this model were given. The existence of stability of these equilibria are presented. Under certain conditions, it shows that this model exhibits have backward bifurcations.
2008, 21 (1): 96-99.