It is believed that the chimpanzee version of the immunodeficiency virus (called simian immunodeficiency virus or SIV) most likely was transmitted to humans and mutated into HIV when humans hunted these chimpanzees for meat and came into contact with their infected blood.
It is called quality of life. If the people of Africa had quality of life and received the same chance of living as Americans there is a better than good chance HIV and Ebola would not exist.
The World Bank (click here) measures poverty globally. In the USA what we define as poverty is wealth elsewhere. Poverty in the USA exists and it should not and is should not be growing. But, then abject poverty as witnessed around the world should not exist either.