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preventive medicine n a branch of medical science dealing with methods (as vaccination) of preventing the occurrence of disease
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the branch of medicine whose main aim is the prevention of disease. This is a wide field, in which workers tackle problems ranging from the immunization of persons against infectious diseases, such as diphtheria or whooping cough, to finding methods of eliminating vector, such as malaria-carrying mosquitoes. See also World Health Organization.
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the branch of medical study and practice that aims at prevention of disease and promotion of health.Medical dictionary. 2011.