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.
Epidemiology is the study of the determinants and distribution of health, disease, and. injuries in human populations. It is a specialized form of scientific research that can. provide health care workers, including community health nurses, with a body of. knowledge on which to base their practice and methods for studying new and existing. problems.