[Current immunological aspects of infectious diseases]

The author discusses different variants of a possible interaction between the infectious agent and the immunological system of the human organism. It was shown that the same causative agent could induce various clinical manifestations of the disease, depending on the functional condition of the immunocompetent system, particularly of the T-lymphoid system. The author believes that in connection with this, proper methods of treatment of infectious diseases (with consideration to the state of the functional activity of the organism's immunological system) could promote successful specific prophylaxis and therapy.