Pr Hamadjam Abboubakar is an Associate Professor in the Department of Applied Mathematics and Computer Science at the School of Geology and Mining Engineering of the University of Ngaoundere, Meiganga, Cameroon. He completed his entire academic degrees at the same institution, earning a Bachelor's and a Master's in Mathematical Epidemiology, in 2006 and 2010, respectively, followed by a Ph.D. in Applied Mathematics in September 2017. His research is centered on the mathematical modeling and control of infectious diseases (such as COVID-19, tuberculosis, typhoid, malaria, Dengue, Chikungunya, Zika) using both classical and fractional derivatives.