Epidemiological characteristics of mumps outbreaks in Guangzhou city from 2006-2018 / 中国学校卫生

ABSTRACT

Objective@#To analyze the epidemiological characteristics of mumps outbreaks in Guangzhou city from 2006 to 2018, and to provide evidence for prevention and control strategy of mumps.@*Methods@#Descriptive epidemiological method was used to analyze the reported data of mumps in Guangzhou from 2006 to 2018. The chi-square test was applied to analyze the outbreaks in different years and types of schools, and the attack rate in different types of schools. The spearman correlation was used to analyze between timing of intervention and duration of the outbreak.@*Results@#A total of 32 mumps outbreaks were reported during 2006-2018, with 992 reported mumps cases in 26 764 students (attack rate was 3.71%). The outbreaks peaked in 2006 (28.13%) and 2012 (18.75%). Mumps outbreaks occurred mainly in March to June and December. The highest peak was in April with 7 outbreaks accounting for 21.88%. The largest number of outbreaks occurred in Conghua district(9,28.13%) and the primary schools(25,78.13%). Spearman correlation coefficient was 0.35 between timing of intervention and duration outbreak (r=0.35，P=0.05).@*Conclusion@#Primary schools in the suburb of Guangzhou are at high-risk for mumps outbreak. Early intervention can shorten the duration of outbreaks. Morning check, school attendance and mumps-specific IgG antibody surveillance should be improved.