Epidemiological Analysis Of Measles In Bozhou From 2005 To 2013

Objective: To investigate and analyze the epidemiological characteristics of measles in Bozhou and the problems in the prevention and control work, providing a more scientific basis and measures for the elimination of measles.Methods: Analyse measles cases reported in Bozhou from 2005 to 2013 through descriptive epidemiological methods. Excel 2007 software is adopted to establish the database, SPSS19.0 software package for data analysis, statistical methods for the chi-square test.Results: 1657 cases of measles cases were reported, of which 295 cases were clinically diagnosed cases, 1362 were laboratory diagnosed cases in Bozhou from 2005 to 2013.The average annual incidence rate of measles was 35.47 / 1000000. There were no deaths. The highest was 109.20 / 1 million in 2008 while the lowest was 4.09 / 1 million in 2012. The city overall incidence of measles outbreaks roughly every two years. There is a rising trend in 2005 and 2008, during which time the total number of cases reported was 56.67 percent of the total numbers while 2010 and 2012 are the city’s measles relatively low incidence years. Measles mainly focused on Qiaocheng District and in the counties measles were not balanced either. Qiaocheng and Mengcheng were areas of relatively high incidences compared with Lixin and Guoyang in a distribute state. The city has a significant seasonal incidence of measles, whose level is high from February to May, low from August 8 to November and shows a rising trend in December. Measles male and female incidence ratio was 1.66: 1, which concentrated in the age group of 14 years and below and constituted 84.85% of the total number of cases. Constitution of 1-14 years age shows a declining trend while cases under one age shows a significant ratio to rise. The incidences of 0-1 age group were significantly higher than other age groups, and 0-1 age group ranks first in incidence rates of all age groups each year during 2005-2013. Occupational distribution was 891 cases of scattered children and 404 cases of students. The incidence of measles of scattered children was on a rising trend year after year while the incidence of measles of kindergarten children was first rising then declining. From the measles cases reported in 2009-2013, no immunization history and unknown immunization history is a high risk of measles cases and most children within 6 years 8 months were with no immune immune object case history or unknown immunization history. The rate of unknown immunization history rises with the increasing of age. There was only one outbreak in December 2013 in Xue radius Village, Qiaocheng District, in which six cases were reported. Vaccine two doses of measles-containing component reports, estimations, surveys basically vaccination rate can reach 90% in 2008-2013, but MCV2 report vaccination rates, the survey vaccination rates, the estimated were low in 2008 but vaccination rates of measles containing survey component vaccine two times a timely vaccination rate is low in 2012. MCV immunization or vaccination leak replant reporting rate could reach 95% in 2009-2013. Measles surveillance information reporting system as a whole well-functioning management system timeliness, specificity, sensitivity indicators meet the requirements in 2009-2013, except for 2009 and 2010 exclude cases reported incidence did not meet the requirements. The collected swabs of suspected cases by laboratory analysis are genotype H1 genotype in Bozhou in 2012-2013. 0-6 year-old children immunized against measles 107 resident level survey conducted in 2011 in Bozhou showed that 107 children against measles antibody positive rate was 89.72 percent, at 95 percent below the level of protective antibodies.Conclusion: Although there has been some progress in eliminating measles in Bozhou, but there is still a great distance to eliminate measles.Therefore measures should be fully implemented to improve school-age children two doses of measles-containing vaccine ingredients routine immunization rates and timely vaccination rates, strengthen measles surveillance, timely conduct focus groups measles immunization or leak replanting work, high-quality measles outbreak response immunization, measles control nonsocial infections, conduct annual nursery, school children vaccination certificate examination, health education, adult conduct vaccination, the immune status of the population to carry out a comprehensive evaluation of prevention and to control and eventually eliminate measles.