Numerical solution of nonlinear fractional SEIR epidemic model by using Haar wavelets

Throughout the world people have been suffering from the infectious diseases like Rubella, Herpes Simplex, Hepatitis B, Chagas, and HIV(AIDS) which have been causing loss of millions of lives and billions of rupees in cure. These diseases get transmitted via both horizontal and vertical transmission routes. One among the most recent mathematical models for modeling the above infectious diseases is fractional order nonlinear SEIR model [3] with non-constant population. In this paper, we have proposed a computationally faster and simpler numerical method based on Haar wavelets to solve the SEIR model. The error bounds have also been derived and validated.