Topic 2.5: The DTM & ETM

Demographic & Epidemiological Transitions (IMP-2.B)

1. The Demographic Transition Model

Stage 1 Stage 2 Stage 3 Stage 4 Stage 5 CBR (Births) CDR (Deaths) Total Pop

Epidemiological Transition (IMP-2.B.2)

Stage 1: Pestilence & Famine

Infectious and parasitic diseases are the primary causes of death. Life expectancy is very low.

Key Threat: The Black Plague / Starvation