We investigate a non-autonomous discrete-time SIRS epidemic model with nonlinear incidence rate and distributed delays combined with a nonlinear recovery rate taken into account the impact of health care resources. Two threshold parameters $ \mathcal{R}_0. \mathcal{R}_\infty $ are obtained so that the disease dies out when $ \mathcal{R}_0 < 1 $; and the infective persists indefinit... https://www.ealisboa.com/quick-offer-NEW-LED-Illumivein-Vein-Finder-Transilluminator-to-Find-Veins-for-Phlebotomy-and-IV-must-buy/