“…Another interesting study can also be found in [21] where a diffusion equation was considered in a time–space fractional framework. The advantages of fractional differential equations (FDEs) over the models of integer-order, such as those discussed in [22] , [23] , motivate the researchers to investigate fractional-order compartmental models in order to gain a better grasp of complex phenomena [24] , [25] , [26] . To examine the emergence of various diseases, some non-integer order models have also been suggested; for instance, one can see the models for the spread of malaria [27] , Zika virus [28] , and dengue fever [29] , all of which have epidemiologically been confirmed, mathematically been examined, experimentally been collaborated, and computationally been simulated.…”