COMESA Umuryango w’Isoko Rusange ry’Ibihugu by’Afurika y’Iburasirazuba n’iy’Amajyepfo cyangwa Umuryango w’ubuhahirane bw’ibihugu by’Afurika y’iburasirazuba n’amajyepfo, Isoko Rusange ry’Ibihugu byo mu Burasirazuba no mu Majyepfo ya Afurika (Common Market for Eastern and Southern Africa)