Abstract
An SEIR epidemic model with a nonlinear incidence rate is studied. The incidence is assumed to be a convex function with respect to the infective class of a host population. A bifurcation analysis is performed and conditions ensuring that the system exhibits backward bifurcation are provided. The global dynamics is also studied, through a geometric approach to stability. Numerical simulations are presented to illustrate the results obtained analytically. This research is discussed in the framework of the recent literature on the subject.
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Buonomo, B., Lacitignola, D. On the dynamics of an SEIR epidemic model with a convex incidence rate. Ricerche mat. 57, 261–281 (2008). https://doi.org/10.1007/s11587-008-0039-4
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DOI: https://doi.org/10.1007/s11587-008-0039-4