RESULTS OF SEROLOGICAL MONITORING OF IMMUNITY TO POLYVIRUSES AT CHILDREN ON THE LVOV RAILWAY
In 1991-1992 as compared to 1989 year the percent of children with high titles of antibodies to the virus of poliomyelitis decreased 4,7 times to the 1-st type of poliovirus hominis, 3,4 times to the 2nd type and 2,9 times to the 3d type of poliovirus hominis. Conducting of unproved by the plan and mass immunizations gave growth of antibodies high titles to 50-60 %, and the most protected appeared to be the children aged 7-9 years old. Immunity levels against poliomyelitis at the children of different contingents, and also on different areas of service did not differ substantially. The substantial decline of tension of immunity at children could be related to the receipt in 1990-1992 parties of vaccines with reduced immunogenety. The chronic diseases of liver substantially reduce development of immune response at children. Last years they observe a tendency to the increase of layer of children with the middle and high titles of antibodies.