The author gives an account of the contents of medical and health informatics. Information systems are the second most important area of health informatics and their contribution to the functions of hospitals, policlinics and individual surgeries is substantial. The position in this country as regards implementation and communication of hospital information systems is not simple and the implementation of completely functional systems will still need considerable efforts. Probably it will be also essential to have a new category of university trained workers which exists in other countries, so-called health care administrators or managers.