Among the various causes of heroin addiction, the use of prescription opioids is one of the main reasons. In this article, we introduce and analyze a two-strain epidemic model with the superinfection for modeling the effect of prescribed opioids abuse on heroin addiction. Our model contains the impact of relapse of individuals under treatment/rehabilitation to drug abuse in each strain. We extract the basic reproductive ratio, the invasion numbers and study the occurrence of backward bifurcation in strain dominance equilibria, i.e., boundary equilibria. Also, we explore both the local and global stability of DFE and boundary equilibria under suitable conditions. Furthermore, we study the existence of the coexistence equilibrium point. We prove that when R0 < 1, the coexistence equilibrium point can exist, i.e., backward bifurcation occurs in coexistence equilibria. Finally, we use numerical simulation to describe the obtained analytical results.
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Memarbashi, R., Ghasemabadi, A., & Ebadi, Z. (2022). Backward bifurcation in a two strain model of heroin addiction. Computational Methods for Differential Equations, 10(3), 656-673. doi: 10.22034/cmde.2021.44619.1881
MLA
Reza Memarbashi; Atena Ghasemabadi; Zahra Ebadi. "Backward bifurcation in a two strain model of heroin addiction". Computational Methods for Differential Equations, 10, 3, 2022, 656-673. doi: 10.22034/cmde.2021.44619.1881
HARVARD
Memarbashi, R., Ghasemabadi, A., Ebadi, Z. (2022). 'Backward bifurcation in a two strain model of heroin addiction', Computational Methods for Differential Equations, 10(3), pp. 656-673. doi: 10.22034/cmde.2021.44619.1881
VANCOUVER
Memarbashi, R., Ghasemabadi, A., Ebadi, Z. Backward bifurcation in a two strain model of heroin addiction. Computational Methods for Differential Equations, 2022; 10(3): 656-673. doi: 10.22034/cmde.2021.44619.1881
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