The data on the morbidity in infectious diseases in the Chechen Republic in recent years are presented. As revealed from these data, under the conditions of the crisis situation the tendency towards the deterioration of the epidemiological situation began to show from the beginning of the 1990s. The growth of morbidity in some infections was registered, the outbreaks of dangerous infections (cholera, poliomyelitis, diphtheria, typhoid fever) appeared. The armed conflicts led to the disintegration of the sphere of social services of the republic and were accompanied by the destruction of the systems of the life support of the population, the deterioration of the quality of antiepidemic measures and by the practically complete incapacity of the local sanitary and epidemiological service to ensure the realization of measures for epidemiological surveillance, as well as measures for the control of infections and their prophylaxis.