[The monitoring of the spread of drug abuse as an element in the epidemiological surveillance of socially significant infections].

The necessity of monitoring the spread of drug addiction in the system of epidemiological surveillance on HIV infection and parenteral virus hepatitides is shown. The results of the epidemiological diagnostics of registered drug addiction are presented. The criteria for the assessment of the epidemiological effectiveness of epidemiological surveillance on drug addiction are determined.

[Epidemiological and genetical characteristics of first forty cases of HIV infection in Perm region].

The paper sums up molecular epidemiological data on all variants of human immunodeficiency virus type 1 (HIV-1) isolated in the Perm region in August 1988-March 1998. A total of 24 foci (40 cases) of HIV infection were detected; 20 of these were imported from other regions (Russian Federation, Ukraine, Belarus, Bulgaria, Poland, Uzbekistan, Yugoslavia). In August 1988-September 1996 viruses of 3 env subtypes (B, D, and G) were isolated in the region, and the virus was mainly sexually transmitted.

[Results of an epidemiological study of familial foci of salmonellosis in the Western Urals].

The study of 449 family foci of salmonellosis demonstrated the possibility of detecting cases of salmonellosis, not diagnosed by clinical and bacteriological methods, in the passive hemagglutination test. Such undetected Salmonella carriers, not observing the rules of personal hygiene, contributed to the contamination of household articles, foodstuffs and the environment. The formation of the family foci of salmonellosis was facilitated by the belated detection and hospitalization of salmonelloses cases, as well as by the inadequate observance of the rules for infant care and feeding.

[Effectiveness of the seroprophylaxis of tick-borne encephalitis depending on the titer of homologous gamma-globulin antihemagglutinins].

To give a rationale for using homologous gamma globulin with antihemagglutinin titers of 1 : 20 to 1 : 80 for the prophylaxis of tick-borne encephalitis, 5-year observations covering all persons attacked by ticks in one of the intensive natural foci of the disease in the Western Urals have been made. The threefold statistically significant difference in the morbidity rate of tick-borne encephalitis between groups of persons immunized and not immunized with gamma globulin has been shown.