Abstract：Objective To analyze the epidemiological features of mumps before and after implementation of the Expanded Program on Immunization (EPI) in Neijiang City so as to provide a scientific basis for mumps prevention and control. Methods Descriptive epidemiological method was used to analyze the epidemiological characteristics of mumps before and after implementation of the EPI (2004-2010 and 2011-2020) in Neijiang City. Results The annual average incidence rates of mumps before and after implementation of the EPI were 13.05/100,000 and 12.28/100,000, respectively, showing a statistically significant difference (χ2trend=2,647.68, P<0.05). There were cases reported in each month during 2004-2020, and most of the cases occurred in January, May, June and December, with the peak of incidence in April-July. The proportions of cases in the months in which the peaks of incidence appeared before and after implementation of the EPI were 53.39% and 51.07% respectively. Compared with before implementation of the EPI, the annual average incidence of mumps in 4 counties (cities or districts) of Neijiang City (accounting for 80.00%) decreased at a certain extent after implementation of the EPI. The top three incidence rates appeared in students, children in nurseries & kindergartens and scattered children both before and after implementation of the EPI, accounting for 94.58% and 93.25%, respectively. Before and after implementation of the EPI, the proportions of cases in children at ages of less than 15 years were 92.98% and 91.99%, respectively, showing a statistically significant difference (χ2=563.26, P<0.05). Conclusion After implementation of the EPI, the incidence rate of mumps in Neijiang City showed a downward trend. However, the trend of continued decline was not obvious since 2014, and the incidence rate in children at ages of less than 14 years remained at a high level. It is suggested that two doses of measles, mumps and rubella combined vaccine should be inoculated to children at school age so as to further decrease the incidence of mumps.
刘春, 徐勇, 朱永义, 杨俊, 余华, 谢丹. 扩大国家免疫规划前后内江市流行性腮腺炎流行病学特征分析[J]. 实用预防医学, 2022, 29(1): 11-13.
LIU Chun, XU Yong, ZHU Yong-yi, YANG Jun, YU Hua, XIE Dan. Epidemiological characteristics of mumps before and after implementation of the Expanded Program on Immunization in Neijiang City. , 2022, 29(1): 11-13.
2022, Vol. 29 
