Analysis of epidemiological trend and spatial aggregation characteristics from 2016 to 2023 of varicella in Shaanxi Province
10.16835/j.cnki.1000-9817.2025049
- VernacularTitle:陕西省2016—2023年水痘流行趋势与空间聚集特征分析
- Author:
ZHU Ni, YANG Guojing, WANG Shu, LI Xinxin
1
Author Information
1. Infectious Disease Prevention and Control Institute,Shaanxi Provincial Center for Disease Control and Prevention, Xi an (710054) , Shaanxi Province, China
- Publication Type:Journal Article
- Keywords:
Chickenpox；Disease outbreaks；Incidence；Epidemiologic studies
- From:
Chinese Journal of School Health
2025;46(2):272-275
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To grasp the distribution characteristics and incidence trend of varicella in Shaanxi Province, so as to provide a reference for scientific and accurate prevention and control strategies.
Methods:Data of 161 377 varicella cases in Shaanxi Province from 2016 to 2023 were collected and described from Surveillance Report Management System, a subsystem of National Disease Control and Prevention Information Systems of Chinese Center for Disease Control and Prevention. FlexScan 3.1.2 software was used to determine irregular spatial clustering, and spatial clustering area was detected for each year.
Results:The incidence of varicella in Shaanxi Province showed a seasonal bimodal distribution with peaks from April to July (36.68%) and from October to next January (48.07%). The cases were mainly concentrated in the 3-12 years old group (60.50%), and there was a trend of high incidence age shift within the 0-19 age group from 2021. Most of the cases were students (62.40%) and preschool children ( 17.78 %). The outbreaks mainly occurred in primary schools (76.47%). The regional distribution was mainly concentrated in some areas of southern Shaanxi and Guanzhong. Through spatial analysis, the primary clusters were primarily concentrated in Ankang and Hanzhong cities in southern Shaanxi from 2016 to 2023, and the secondary clusters were mainly found in some areas of Guanzhong (Xi an, Baoji and Weinan cities).
Conclusions:Prevention and control of varicella should be focused on students and kindergartens aged 3-12 years in southern and Guanzhong areas of Shaanxi Province. Continuous varicella surveillance and vaccination measures should be carried out, and the two dose vaccination strategy and intensive vaccination of key groups should be actively promoted.
