[The experimental evaluation of the possibility of the penetration of enteric viruses from the surface into the pulp of contaminated fruits and vegetables].

According to the results of complex microbiological examination of samples of vegetables, fruits and grapes there was established significant contamination of them with opportunistic bacteria, antigens of intestinal viruses and cysts of intestinal Protozoa, that confirms the epidemiological role of these products as factors in transmission of acute intestinal infections. There was revealed ribonucleic acid of enteric viruses in experimentally infected pulp from the surface of tomatoes and apples, that indicates to the possibility of penetration of these pathogens into the fruits and vegetables through intact (having no visible damages) surface.

[Microbiological evaluation of chicken meal "shaverma" as a factor for Salmonella transmission].

It has been established that the dish shawarma may be a factor for Salmonella transmission, by involving in sporadic and outbreak cases of Salmonella infection. Chicken fillet grilling when cooking the dish shawarma has been found to ensure its guaranteed freedom from Salmonella only in a piece less than 2 cm thick. Deeper layers of chicken and its juice that accumulates in the grill tray may remain be Salmonella-contaminated throughout the heat treatment. Obviously, for the epidemiological safety of the dish shawarma, it is necessary to cut a not more than 2-cm piece of fillet every time the latter is ready-made, i.e. a white color and a clear juice are produced. At the time one should not use the chicken juice as sauce to the ready-made fillet and to gather and crumble the latter in a separate container rather than in the tray.

[Influence of dairy food rotavirus contamination on morbidity].

The indirect hemagglutation test (IHT) indicated that rotaantigen infection of dairy foods (DF) selected at the milk processing shop in the year of high morbidity due to rotavirus infection (RVI) averaged 12.4%. Laboratory monitoring of DF sold in the year of relative low morbidity could establish that the rate of their rotaantigen contamination averaged 4.8%, as evidenced by IHT; polymerase chain reaction was positive in 19.3% of cases. Comparison of annual trends in the detection rate of rotaantigen in DF and RVI morbidity revealed that there was an increase in DF rotavirus contamination in the cold period of a year, following the seasonal activation of an epidemic process.

[Evaluation of intestinal viral contamination of water objects as compared to morbidity trends]. / Otsenka kontaminatsii vodnykh ob"ektov kishechnymi virusami v sopostavlenii s dinamikoi zabolevaemosti naseleniia.

The 1988-2000 laboratory studies of water objects in the Perm Region revealed a significant contamination of household effluents, underground and superficial water sources and distribution network water with hepatitis A antigen, Coxsackie and ECHO enteroviruses, and rotavirus antigen. A decrease in the contamination of distribution network water with hepatitis A antigen and an increase in its contamination with rotavirus antigen in recent years coincide with the trends of epidemic processes of respective infections. The maximum deterioration of the quality of distribution network water due to its contamination with hepatitis A antigen and rotavirus antigen is observed during spring freshet and precedes a seasonal rise in the incidence of hepatitis A and rotavirus infection in the population.

[Experience with the development of vaccinal prophylaxis in Perm Province]. / Opyt razvitiia vaktsinoprofilaktiki v Permskoi oblasti.

The results of the introduction of the system of epidemiological surveillance on vaccinal prophylaxis on the territory of Perm Province are presented. This system has permitted the realization of the principles of the regional tactics of immunization, while following the unified strategy acting on the territory of the Russian Federation. The optimization of the organizational foundations of vaccinal prophylaxis has made it possible to maintain the morbidity rates if infections, controlled by means of specific prophylaxis, on the levels below the average figures for the Federation and to preserve more stable tendencies to their decrease.