Look at this graph from When Birds Get Flu and Cows Go Mad! by John DiConsiglio. HIV/AIDS IN AFRICA, 1958–2003 The deadly disease has been dramatically shortening life expectancy. Given the change in life expectancy, what can the reader conclude about HIV/AIDS in Africa? It has spread over time. It has lessened over time. It has been wiped out over time. It has stayed the same over time.
