Moroccans descended from Berbers, Arabs, and Black Africans exactly like the neighboring Maghrebians. The Berbers are the prehistoric populations of Morocco and are related to the wider group of Paleo-Mediterranean peoples. The Afroasiatic family may have originated in the Mesolithic period, perhaps in the context of the Capsian culture.
Epidemiologic triangle model of disease causation. A common model used in public health illustrates the relationships among an agent, a host and the environment. It applies to biological, chemical and physical agents.
1 Distinguish between definitions of epidemiology and clinical epidemiology. 2  Apply the terminology of the Epidemiologic Triad to an infectious disease. 3  Use the Epidemiologic Triad to identify modifications that will affect the frequency of disease in a population.  State five objectives of epidemiologic research.