[New serological variants of Yersinia enterocolitica and Yersinia kristensenii].

Seven Yersinia strains, selected from a number of cultures, not agglutinated by 32 typing sera, were found to have original antigenic features. These strains were given over to the Tarasevich State Research Institute for Standardization and Control of Medical Biological Preparations and registered under O-factor formulae and numbers: Y. kristensenii 165-036, Y.

[The cellular fatty acid composition of bacteria in the family Vibrionaceae].

It is shown that strains of Vibrio cholerae of serovar O1, biovar eltor, subtype Ogawa, museum strains V. cholerae of serovar O1 and NAG-vibrios (isolated from various sources: sea, river and sewage water, canal water and people) possess identical composition of cell fatty acids with prevailing hexadecenoic, hexadecanoic and octadecenoic acids. Being identical, fatty acid profiles of V.

[Choice of commercial elective nutrient media for the isolation of pathogenic vibrios of different species].

Commercial nutrient media and their modifications are assessed, including elective differentiation medium for V. cholerae developed at the Rostov Research Anti-Plague Institute for the isolation of pathogenic vibrios. V.

[Vibrios pathogenic to humans and laboratory diagnosis of diseases caused by them].

Present-day taxonomic status of vibrios pathogenic for humans is discussed, as are the phenotypical characteristics of some species, factors of virulence, and clinical manifestations of diseases caused by these agents. A scheme of isolation and identification of vibrios pathogenic for humans is offered.

[The cellular fatty acid composition of bacteria in the family Vibrionaceae].

Vibrio cholerae strains, serovar O1, biovar eltor, subtype Ogawa, isolated from different sources, V. cholerae classica and NAG vibrios have identical cell fatty acid composition with the prevalence of hexadecenoic, hexadecanoic and octadecenoic acids. V.

[Pseudotuberculosis in the Krasnodar Territory. The clinico-epidemiological characteristics of its morbidity and the biological properties of its strains].

Group cases of pseudotuberculosis, first registered at health-restoring institutions of the health resort of Gelendzhik (the Krasnodar Territory), are described. The etiology of these cases of the disease was established on the basis of clinico-epidemiological data, specific seroconversion in 66% of the examined patients and the isolation of Yersinia pseudotuberculosis strains from the feces of four patients. The combination of signs observed in the isolated strains, viz.

[The spread of the causative agent of yersiniosis in the regions of Sochi and adjacent areas].

Yersinia enterocolitica sensu stricto, Y. kristensenii, Y. aldovae and Y.

[Screening of plasmids in museum strains of Yersinia pestis isolated from various natural foci].

92 strains of Yersinia pestis isolated from different natural foci and stored for 3-40 years in the museum of live cultures have been studied. The strains having three typical plasmids, their different combinations, plasmidless strains or the strains carrying nontypical plasmids with the molecular masses 9, 15, 55, 80, 90 and 150 Md were found. The old museum strains are proposed to be used as a source of plasmids for the genetical research.

[The prevalence of Yersinia and its serologic variants in patients with acute intestinal diseases of undetermined etiology in Leningrad].

Among Yersinia enterocolitica strains of 32 serovars, proposed as typing strains, some strains were found to belong to new species. Y. enterocolitica sensu stricto was represented by 21 serovars in the collection of typing strains.

[Coagglutinating diagnostic agents for serological identification of Yersinia enterocolitica].

Coagglutinating antibody agents of Y. enterocolitica serologic variants O3; O5; O5.27; O6.

[A simplified method of determining the serologic variants of Yersinia enterocolitica].

Identification of the serological variants according to G. Wauters et al. involves examination of one strain in the agglutination test with 32 sera, and to specify a number of serological variants, investigations with monosera are necessary.

[A comparative evaluation of the growth of Yersinia enterocolitica on elective media].

The aim of the work has been to find the optimal selective medium for the isolation of different serological and biochemical variants of Y. enterocolitica. Endo's, Ploskirev's, Lewin's, and bismuth sulfite media have been under study.

[Serological variants of Yersinia enterocolitica circulating in different geographical areas of the Soviet Union].

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.

[Use of the phenol fraction of Brucella for isolating a specific serum against Yersinia enterocolitica serovar O9].

A phenol fraction, capable of adsorbing cross-reacting antibodies from Y. enterocolitica O9 antiserum without affecting its serological activity against specific antigens, has been obtained from a Brucella strain. The physicochemical and antigenic characteristics of the preparation are presented.

[Antibiotic sensitivity of Yersinia enterocolitica strains isolated from rodents and sick persons in Krasnodar Territory].

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.

[Antibiotic sensitivity of Yersinia enterocolitica and Yersinia pseudotuberculosis isolated from patients with the jaundice form of acute hepatitis].

Sensitivity to 12 antibiotics of Y. enterocolitica and Y. pseudotuberculosis isolated from patients with acute hepatitis in the jaundice form was studied.

[Serologic affinity and specificity of action of pseudotuberculosis and coli-dysentery phages].

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).

[Determination of sero- and biovariants of foreign and Soviet strains of Yersinia enterocolitica].

The results of the typing of the biochemical and serological variants of Yersinia enterocolitica strains from the USSR (10 strains) and other countries (32 strains) are presented. Most of these strains, belonging to biovars 1 and 5, could be determined with the use of the antigenic scheme which was proposed by Knapp only for biovars 2, 3 and 4. The strains isolated in Leningrad and in the Far East were found to belong to serovars 6,30; 7,8; 12,25 and 5B according to the scheme proposed by Wauters; of these, the last one corresponds to serovar IV in Knapp's scheme.

[Action of tetracyclines on the pseudotuberculosis microbe in vitro experiments and their effectiveness in experimental pseudotuberculosis in white mice].

227 out of 228 strains of pseudotuberculosis microbes studied in vitro proved to be sensitive to tetracyclines. The MIC of tetracycline and morphocycline ranged within 0.25--25 gamma/ml.

[Comparative study of the effect of antibiotics-aminoglycosides on pseudotuberculosis bacterium in vitro and in vivo].

It was found that 229 out of 230 strains of pseudotuberculosis microbes tested were sensitive to aminoglycosides, such as streptomycin, monomycin, neomycin, kanamycin and gentamicin. The MIC did not exceed 50 gamma/ml. One strain of J.