A generalized "SVEIR" epidemic model with general nonlinear incidence rate has been proposed as a candidate model for measles virus dynamics. The basic reproduction number $ \mathcal{R} $. an important epidemiologic index. was calculated using the next generation matrix method. https://www.roneverhart.com/Cho-Pat-Tennis-Elbow-Strap-Tennis-Elbow-Strap-Small-5623/