Epidemiological Transition Omran - 1982
�Shifts in health and disease patterns�
�Social economic and medical developments�
Three Stages: 1- �The age of pestilence and famine� 2- �The age of receding pandemics� 3- �The age of degenerative and man-made diseases�
�Fertility decline is expected to follow these gains against mortality but with varying speed and varying reasons�