[The spread of the causative agent of yersiniosis in the regions of Sochi and adjacent areas]. / Izuchenie rasprostraneniia vozbuditelia iersinioza v raionakh Sochi i prilegaiushchikh zonakh.

Yersinia enterocolitica sensu stricto, Y. kristensenii, Y. aldovae and Y. intermedia strains were for the first time isolated in the Sochi districts from people, synanthropic rodents and washings from vegetables. In the adjacent alpine and subalpine areas isolates were obtained from wild rodents. 86.7% of the isolated strains were assigned to the known antigenic variants; O16; O5; O6.31; O7.8 and O6.30 serovars were predominant. All the strains isolated from people belonged to biovar 1 and O5; O6.31; O6.30 and O10 serovars. Y. intermedia and Y. aldovae belonged to O1, 2a, 3 and O16 serovars respectively. Y. kristensenii could not be agglutinated with sera against type strains of Yersiniae represented in the antigenic scheme of Wauters et al.

[Coagglutinating diagnostic agents for serological identification of Yersinia enterocolitica]. / Koaggliutiniruiushchie diagnostikumy dlia serologicheskoi identifikatsii Yersinia enterocolitica.

Coagglutinating antibody agents of Y. enterocolitica serologic variants O3; O5; O5.27; O6.30; O7.8; O9; O16 were prepared on the basis of Cowan I lyophilized reagent; they were lyophilized with Faibich lyophilization medium. These diagnostic agents have shown high activity and specificity.

[Serological variants of Yersinia enterocolitica circulating in different geographical areas of the Soviet Union]. / Serologicheskie varianty Yersinia enterocolitica, tsirkuliruiushchie v razlichnykh geograficheskikh zonakh Sovvetskogo Soiuza.

The serological variants of a number of Y. enterocolitica strains isolated in different regions of the USSR (1,085 strains isolated from humans and animals in the North-West of the RSFSR, 76 strains isolated from humans and animals in the Krasnodar Territory and 114 strains isolated from humans only in the area east of Lake Baikal) were determined. 25 serological variants were registered in these 3 regions of the USSR. The cultures isolated from rodents belonged mostly to serovars 06,30; 03; 05; 04,33; 019,8; 016; and from humans, to serovars 03; 05; 07,8; 016; 06,30; 09.

[Antibiotic sensitivity of Yersinia enterocolitica strains isolated from rodents and sick persons in Krasnodar Territory]. / Chuvstvitel'nost' k antibiotikam shtammov Yersinia enterocolitica, vydelennykh ot gryzunov i bol'nykh liudei na territorii Krasnodarskogo kraia.

Seventy-three strains of Y. enterocolitica isolated from patients with acute gastrointestinal diseases and from wild and synathropic rodents in the Krasnodar region were studied for sensitivity to 12 antibiotics. The strains were shown to be sensitive or moderately sensitive to aminoglycosides. Their MIC for the predominating majority of the strains ranged from 0.4 to 6.4 micrograms/ml. Gentamicin and streptomycin proved to be the most active. Then follow kanamycin, tobramycin and sisomicin. However, some strains were resistant to kanamycin and streptomycin. The strains of the microorganism causing gastric yersiniasis had moderate sensitivity to tetracycline and moderate resistance to rifampicin, chloramphenicol and polymyxin B. All the strains were highly resistant to penicillin, which was characteristic of Y. enterocolitica.

[Serologic affinity and specificity of action of pseudotuberculosis and coli-dysentery phages]. / Serologicheskoe rodstvo i spetsifichnost' deistviia psevdotuberkuleznykh i koli-dizenteriinykh fagov.

The study of serological properties, specificity and the range of action has revealed affinity between Y. pseudotuberculosis phages (PST, 3M, Kotlyarova, 2344, 2391), some coliphages (T2, T3, T4) and Sh. dysenteriae phage (dd IV). The existence of serovar III of Y. pseudotuberculosis phages has been established; to this serovar phage PST belongs. Newly isolated 2344 and 2391 belong to serovar I. The problem of the existence of Y. pseudotuberculosis phages as an independent group is discussed.