| Objectives:By analyzing mumps epidemic of Weifang City in2005-2009, find out the characteristics of mumps in Weifang City in2005-2009, explore the epidemic pattern, analyze the influencing factors of complications. Through the research, provide scientific evidence for government’s disease prevention and control strategies, and targeted health education measures in future.Methods:The survey was conducted by the health units at all classes in Weifang City to report mumps cases; these health units investigated and filled the national uniform questionnaire Mumps Case Form, recorded these cases by filling in Mumps Case Report and Registration Form for Wefang City, then sent to our research group. Members of group investigated the rate of missing, implemented technical design and quality control etc. The statistical analysis was performed with Exce12003, SPSS13.0and SAS9.1software. The statistical description part was used median, rate and constituent ratio; the analysis of influencing factors for mumps complications was used x2test, non-conditional logistic regression method.Results:There were1929cases of Mumps reported in Weifang City in2005-2009,the average annual incidence rate was4.43person per100,000. Incidence had obvious seasonal trend, with two seasonal peaks in late autumn to early winter and late spring to early summer (April-July); the latter was higher than former. The population of onset was mainly in students and children under15years old, and the peak ages of7-12years old. The ratio of sex was1.77:1for male to female. The occupational distribution of the incidence was mainly in primary and secondary students. In1773cases of0-15years old, there were172cases who had immunization history, accounting for only9.70%. There was still large gap in activities for Mumps immunity in children under the age of15in Weifang City. There were503cases complications in1929cases, accounting for26.08%. The most common complications are Meningitis and Encephalitis, respectively,11.6%(223/1929) and10.3%(198/1929); then followed by Pancreatitis, Orchitis, Myocarditis, and Tympanitis, respectively,3.5%(68/1929),1.7%(32/1929),1.2%(24/1929) and0.4%(8/1929). There were significant differences in different age groups for the incidence of Meningitis and Encephalitis (x2=52.895, P<0.01;x2135.263, P<0.01); The Meningitis and Encephalitis incidences for0-6age group,7-12age group and13-17age group accounted for94.17%and97.47%respectively. Number of people over the age18with concurrent Orchitis accounted for53.13%of the total number of Orchitis cases, which had statistical significance (x2=103.428, P<0.01). There was statistical significance for Pancreatitis incidences in all age groups (x2=16.120, P<0.01); the number of Pancreatitis cases in0-6and7-12age group accounted for77.94%of the total pancreatitis cases. There were no statistical significance between the age groups for Myocarditis and Tympanitis. Through analysis of influencing factors to Mumps complications, we found that the incurrence of Mumps complications had statistical significance with factors age, occupation, with or without vaccination history, high fever and with or without submandibular gland enlargement(P<0.05).Conclusions:The main population of mumps prevention and control is primary and secondary school students and preschool children, especially children under age15. It’s necessary to strengthen the mornitoring and management of primary and secondary schools and nursery units, improve mumps vaccine coverage, radically reduce the incidence of mumps; to reinforce the connections between childcare institutions, schools and CDC, keep high vigilance and timely detection, diagnosis, isolation and treatment to patients; to work well on management of infection source, and to take measures like emergency vaccination to strengthen protection of close contact persons and to prevent the occurrence of large outbreak of epidemic. It’s necessary to concern highly about patients with immunization history, high fever, or accompanied by the submandibular gland enlargement, treat them in time to minimize or avoid complications. It’s necessary to strengthen health education, enhance the masses of self-protection awareness. |
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