Preventive medicine (hygiene) is as old as therapeutic medicine because its roots are in the experience of ancient doctors. Scientific development of this field started with the development of the natural sciences 150 years ago. It has been proven that illness and health are the products of mutual influences of external and social environment on the life of an individual person. It is possible to influence health by adjusting those conditions. ...

Keywords: Hygienic and epidemiological service; Czech Republic army