CHINESE JOURNAL OF PARASITOLOGY AND PARASITIC DISEASES >

2025 , Vol. 43 >Issue 4: 540 - 546

DOI: https://doi.org/10.12140/j.issn.1000-7423.2025.04.014

ORIGINAL ARTICLES

Endemic status of amoebic dysentery in China from 2020 to 2021

  • HUANG Jilei ,
  • ZHOU Changhai ,
  • ZHU Tingjun ,
  • ZHU Huihui ,
  • LI Shizhu ,
  • QIAN Menbao
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  • 1 National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Chinese Center for Tropical Diseases Research; National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases; NHC Key Laboratory on Parasite and Vector Biology; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai 200025, China
    2 School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China

Received date: 2025-04-02

  Revised date: 2025-06-23

  Online published: 2025-10-09

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Abstract

Objective To investigate the incidence, epidemiological characteristics and changing trends of amoebic dysentery in China, so as to provide insights into formulation of tailored control strategies and surveillance measures and optimization of resource allocation in the futur. Methods Individual data and demographic data of cases of amoebic dysentery with dates of disease onset between January 1, 2020 and December 31, 2021 were collected from the Infectious Disease Report Information Management System, and the incidence and its changing trends of amoebic dysentery were analyzed using a descriptive epidemiological method in China from 2020 to 2021. In addition, the spatial distribution characteristics and tempo-spatial clusters of amoebic dysentery were identified using the ArcGIS and SaTScan software. Results A total of 670 and 539 cases of amoebic dysentery were reported in China in 2020 and 2021, with incidence of 0.048/100 000 and 0.038/100 000, respectively. The reported incident cases and incidence of amoebic dysentery in 2021 decreased by 19.55% and 20.83% as compared with those in 2020, respectively. The number of reported incident cases peaked in May 2020 (85 cases) and June 2021 (73 cases), and the period from May to July was the common epidemic season for both years. The ratios of male to female reported incident cases were 1.27 ∶ 1 and 1.28 ∶ 1 in 2020 and 2021, respectively. Both the reported incident cases and incidence of amoebic dysentery appeared a tendency towards a decline followed by a rise, and then a decline with ages, and the highest numbers of reported incident cases and incidence of amoebic dysentery were all found at ages of 0 to 5 years, with 326 incident cases and 0.40/100 000 incidence in 2020 and 197 incident cases and 0.25/100 000 incidence in 2021. The reported incident cases were predominantly found among diaspora children in 2020 and 2021, accounting for 45.82% (307/670) and 33.77% (182/539) of totally reported cases, followed by farmers, accounting for 22.09% (148/670) and 26.53% (143/539), respectively. The provinces (autonomous regions) with the three highest incidence were Guangxi (0.32/100 000), Henan (0.16/100 000) and Guangdong (0.12/100 000) in 2020, and Guangxi (0.22/100 000), Yunnan (0.19/100 000) and Guangdong (0.09/100 000) in 2021, respectively. Both Guangxi and Guangdong were among the top three provinces (autonomous regions) in both years in terms of both reported incidence and incident cases of amoebic dysentery, which both appeared a tendency towards a decline from 2020 to 2021. Global spatial autocorrelation analysis revealed no significant spatial clustering of amoebic dysentery at either a provincial or county level. Space-time scan analysis detected two statistically significant clusters in 2021, and the cluster areas were found in Yunnan and Guizhou, which involved 17 counties (cities, districts) in southwestern China. Conclusion The incident cases and incidence of amebiasis appeared a tendency towards a decline in China from 2020 to 2021, with two cluster areas in southwestern China.

Key words： Amebic dysentery; Incident case; Incidence; Cluster area

Cite this article

HUANG Jilei , ZHOU Changhai , ZHU Tingjun , ZHU Huihui , LI Shizhu , QIAN Menbao . Endemic status of amoebic dysentery in China from 2020 to 2021[J]. CHINESE JOURNAL OF PARASITOLOGY AND PARASITIC DISEASES, 2025 , 43(4) : 540 -546 . DOI: 10.12140/j.issn.1000-7423.2025.04.014

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