Kozishkurt O. Epidemiological characteristic and the role of water factor in the prevalense of hepatit A in t. Odessa

There were conducted researches allowed to determine the epidemiological pattern of the prevalence, intensity and trends of HA in the city of Odessa during 35 year periods (1970-2004). There were demonstrated the changed of the principal characteristics of epidemiological process at the modern stage of its development. As the main factor of agent spreading potable water was determined due to secondary pollution in the water supply netwok. There was approved the direct correlation between HA incidence and positive results of the virus indication in potable water amongst adults as well as amongst children. The important role as the factor of HA spreading was determined for seawater if the residential area is located nearby seashore. Accordingly to the data of epidemiological surveillanse and virological control there was determined the principal probability of the effective influence on water factor of HAV spreading by the modern disinfectant - chlorine dioxide (by the example of the town of Illichovsk).