Analysis of epidemiological trend and spatial aggregation characteristics from 2016 to 2023 of varicella in Shaanxi Province

ZHU Ni; YANG Guojing; WANG Shu; LI Xinxin

doi:10.16835/j.cnki.1000-9817.2025049

Volume 46 Issue 2

Feb. 2025

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ZHU Ni, YANG Guojing, WANG Shu, LI Xinxin. Analysis of epidemiological trend and spatial aggregation characteristics from 2016 to 2023 of varicella in Shaanxi Province[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2025, 46(2): 272-275. doi: 10.16835/j.cnki.1000-9817.2025049

Citation:

ZHU Ni, YANG Guojing, WANG Shu, LI Xinxin. Analysis of epidemiological trend and spatial aggregation characteristics from 2016 to 2023 of varicella in Shaanxi Province[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2025, 46(2): 272-275. doi: 10.16835/j.cnki.1000-9817.2025049

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Analysis of epidemiological trend and spatial aggregation characteristics from 2016 to 2023 of varicella in Shaanxi Province

doi: 10.16835/j.cnki.1000-9817.2025049

Infectious Disease Prevention and Control Institute, Shaanxi Provincial Center for Disease Control and Prevention, Xi'an (710054), Shaanxi Province, China

Received Date: 2024-11-04
Rev Recd Date: 2024-12-11

Available Online: 2025-03-05

Publish Date: 2025-02-25

Abstract

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.
- Chickenpox,
- Disease outbreaks,
- Incidence,
- Epidemiologic studies

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References(15)

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