[The concept of information systems]

On the example of existing information systems of communicable diseases the authors analyze the possibilities of and draw attention to the obstacles of their wider use. The following information systems are involved: ARO (acute respiratory diseases), APO (acute diarrhoeal diseases), ISBT (information system of bacillary tuberculosis), ISPO (information system of communicable diseases), ISID (information system of child immunization). In the general evaluation the authors draw attention to the demand to do away with the scattered character of the system and the necessity of delimitation of the responsibility for the establishment and operation of the information systems. The authors indicate the future desirable development.