UNICEF is committed to helping children and adolescents construct a solid basis for adulthood. The population in question can be as small as a handful of people or as large as all of the inhabitants of several continents . Public health has many sub-fields, however usually includes the interdisciplinary classes of epidemiology, biostatistics and health services. Environmental health, group health, behavioral health, and occupational health are also essential areas of public health. This is meant to ensure that the whole inhabitants has entry to medical care on the idea of want quite than capacity to pay. Delivery could also be through personal medical practices or by state-owned hospitals and clinics, or by charities, mostly by a mixture of all three.

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• Public health has many sub-fields, however