The goal of this work is to study a ZIKA disease model using fractional derivatives in the Caputo sense. After formulating the model, we compute the basic reproduction number R 0 and give rigorous proof of the existence of equilibrium points as well as stability analysis of these equilibrium points. Then, we study the existence and the uniqueness of the solutions of the fractional model using the Banach fixed point theory. Numerical simulations are performed to validate our analytical results, as well as to see the impact of varying the fractional parameter on the disease dynamics