[New serological variants of Yersinia enterocolitica and Yersinia kristensenii]. / Novye serologicheskie varianty Yersinia enterocolitica i 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. enterocolitica 170-037, Y. enterocolitica 168-038, Y.enterocolitica 167-039, Y. enterocolitica 166-040, Y. enterocolitica 169-041, Y. kristensenii 171-042. In our collection of strains antigenic analogs of new typing strains were found. The inclusion of sera to new serovars into the set of Yersinia diagnostic sera will widen the possibilities of epidemiological analysis.

[An operative analysis of the cholera epidemic in the Republic of Dagestan using a computer database]. / Operativnyi analiz épidemii kholery v Respublike Dagestan s ispol'zovaniem komp'iuternoi bazy dannykh.

The epidemiological information on cholera epidemic in Daghestan during the period of June 6 to October 21, 1994, based on the data obtained from 2,327 patients and Vibrio carriers in 184 settlements of 27 regions, 8 towns and 1 housing estate, was collected, systematized and analyzed with the use of the data base (DB). The use of DB made it possible to carry out the surveillance of the level of and dynamics of morbidity and infections rates, to determine the territories of risk, the age and social groups of risk, the active routes and factors of transmission. DB may be used for analyzing of operative and current epidemiological information in cholera and other infections.

[The epidemic situation re: cholera in the world: a morbidity analysis and trends]. / Epidemicheskaia situatsiia po kholere v mire: analiz i tendentsiia zabolevaemosti.

The analysis of cholera morbidity throughout the world over the period of 1988-1992 indicates the existence of a tendency towards an increase in morbidity due to epidemic outbreaks in the countries of South and Central America and in Africa. Using the data of literature, attempts have been made to elicit the causes of the sudden appearance and spread of cholera in South America. The increase of cholera morbidity in Africa is associated with the activization of cholera in endemic foci and intensified migration caused by military conflicts in the countries of Central and East Africa. Cholera morbidity in Asia appears to be declining; however, large outbreaks of cholera, as well as diarrheal diseases clinically similar to cholera and caused by Vibrio cholerae non 01, serogroup 139, have been recorded. In Europe, including Russia, cholera outbreaks and sporadic cases, mainly imported, have been reported. The prognosis of cholera situation remain unfavorable due to the activization of epidemic processes and the constant risk of the infection being imported to any country of the world.