[The characteristics of HIV infection during a sharp activation of the epidemic process in Rostov Province]. / Osobennosti VICh-infektsii v period rezkoi aktivizatsii épidemicheskogo protsessa v Rostovskoi oblasti.

A considerable growth in cases of HIV infection in Rostov Province was registered in 1996-1997. Number of men was 525, number of women--196 cases, were registered. The highest index of HIV infection was noted in group of tested by epidemiological evidence (4494,4 per 100,000 tested persons), which was 57.2 times higher than the average level for this region. The growth in the number of infected persons was due to the import of HIV from the territory of Ukraine and the subsequent spread of the virus among drug addicts introducing drugs by intravenous injection.

[Etiological structure and clinical epidemiological characteristics of Leptospira infection in Rostov Province based on data from therapeutic institutions from 1960 to 1983]. / Etiologicheskaia struktura i kliniko-épidemiologicheskaia kharakteri stika leptospiroznoi infektsii v Rostovskoi oblasti po materialam nekotorykh lechebnykh uchrezhdenii za 1960--1983 gg.

Changes in communal conditions, in economy, as well as in ecology and fauna, which took place in Rostov Province during the last decade (1973-1983) determined shifts in the etiological structure of Leptospira infection and in its course. The study revealed an increase in morbidity caused by L. icterohaemorrhagiae (up to 61%) and L. hebdomadis (up to 22%) with a simultaneous decrease in the isolation rate of L. grippotyphosa and L. pomona (up to 2-3%). In most cases (77%) the diseases caused by leptospires of different serogroups were found to take an icteric course accompanied by the development of hepatorenal insufficiency (46%). The similarity of clinical manifestations in different etiological forms of Leptospira infection was determined by common pathogenetic and pathophysiological features characteristic of the development of the leptospiral infectious process.

[Relation of the epidemiological characteristics of dysentery to the biological properties of the causative agents]. / Sviaz' nekotorykh osobennostei épidemiologii dizenterii s biologicheskimi svoistvami vozbuditelei.

The main forms of the epidemic manifestation of dysentery induced by different causative agents in 1975-1980 were revealed. During these years the cases of dysentery induced by Shigella sonnei, biovar II, were found to prevail (82.0-90.1%) both at the periods between epidemics and at the periods of the seasonal rise of morbidity. The experimental infection of white mice by intraperitoneal inoculation revealed no relationship between the seasonal rise of morbidity in dysentery and the virulence of its causative agents.

[Use of intraspecific differentiation of Sh. sonnei for the purpose of studying patterns in the epidemic process of dysentery]. / Ispol'zovanie vnutrividovogo differentsirovaniia Sh. sonnei s tsel'iu izucheniia zakonomernostei épidemicheskogo protsessa pri dizenterii.

The use of complex typing of Sh. sonnei by the colicinogenic and enzymatic properties in epidemiological analysis of dysentery caused by Sh. sonnei, apart from establishment of epidemiological connections in the foci, offered a possibility of introducing significant corrections in the determination of the sizes and duration of existence of the epidemic foci, as well as in detection of the sources and factors of transmission of the infection established in epidemiological examination. Typing of Sh. sonnei also aided in ascertaining that, apart from general regularities in the individual territories, the epidemic process in individual groups of the population and in different seasons of the year could also course autonomously.