[The clinical application of 13C-breath tests in pancreatic diseases].

Maldigestion persists in most patients with chronic pancreatitis (GP). The objective lipase and amylase insufficiency diagnosis is needed to achieve an adequate clinical response to oral pancreatic enzyme substitution therapy. The novel data is presented in the article about the role of 13C-mixed triglyceride and 13C-corn starch breath tests as a tools for exocrine pancreatic insufficiency diagnosis, for evaluating fat and starch malabsorbtion in CP patients.

[Epidemiological aspects of leptospirosis in the eastern regions of the Russian Federation].

There have recently substantial changes in the basic parameters of Leptospira infection in the eastern regions. The infection is characterized by a pronounced and steady-state rise in morbidity rates, by its trend for urbanization, by the spread of the disease in recreational areas, by a primary role of dogs as sources of infection, by polymorphism and atypical nature of the clinical picture of Canicola leptospirosis, which make its diagnosis difficult. The anthropurgic foci where dogs and pigs are the main sources of pathogenic leptospiras are of the leading epidemiological significance.

[Distribution of viruses from the Californian encephalitis serogroup (Bunyaviridae, Bunyavirus) in the northern expanses of Russia].

The study was carried out in 1983-1991 and covered a territory of about 10 x 10(6) km2 in various physico-geographic areas (East Fennoscandia, Northern Russian Plain, West Siberia, Central Siberia, North-Eastern Siberia, and Northern Pacific Region) in the Arctic, Subarctic, Northern-Central-Southern taiga, forest-steppe, and steppe in Northern Russia. A total of 251 strains were isolated from 1391,900 mosquitoes, identified as the California group snowshoe hare (83), Inkoo (44), and Tahyna (2) viruses; 122 strains were not completely identified. Some of the strains with uncommon antigenic composition can be natural reassortants.

[Zoonotic infections in the central and southern ulusy of the Republic of Sakha].

The serological survey of humans, as well as agricultural animals and rodents, for the presence of zoonotic infections, was carried out. Local inhabitants were shown to have contacts with the causative agents of pseudotuberculosis, enteric yersiniosis, tularemia, leptospirosis, Q fever, tick-borne rickettsiosis, chlamydiosis, toxoplasmosis. The immune stratum with respect to enteric yersiniosis was found to have a greater index, while the immune strata with respect to chlamydiosis, Q fever, pseudotuberculosis had the least indices.

[The epidemiological patterns of yersiniosis in the Republic of Sakha (Yakutia)].

On the basis of complex studies, carried out over the period of 21 years, the epidemiological characterization of Yersinia infections in the Republic of Sakha (Yakutia) is presented. The average monthly morbidity rate (per 100,000 persons) was 5.8 +/- 0.