Analysis of the epidemiological characteristics of imported malaria cases in Beijing from 2014 to 2023
10.3969/j.issn.1005-0507.2025.04.001
- VernacularTitle:2014—2023年北京市疟疾入境病例的流行病学特征分析
- Author:
Rui TIAN
1
;
Yi ZHANG
1
;
Yi TIAN
1
;
Dai-tao ZHANG
2
;
Zhan-ying HE
2
Author Information
1. General Administration of Customs(Beijing)International Travel Healthcare Center, Beijing 100013, China
2. Institute of Infectious and Endemic Disease Control, Beijing Center for Disease Control and Prevention, Beijing 100013, China
- Publication Type:Journal Article
- Keywords:
Imported cases;
Malaria;
Epidemiology;
Falciparum malaria
- From:
Acta Parasitologica et Medica Entomologica Sinica
2025;32(4):193-197
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the epidemiological characteristics of confirmed malaria cases reported by hospitals in Beijing from 2014 to 2023 among individuals who traveled abroad within the previous year and to provide a scientific basis for preventing the re-transmission of imported malaria. Methods Case data were derived from the“China Information System for Disease Control and Prevention. ”Imported malaria cases reported in Beijing from January 1, 2014, to December 31, 2023, were selected. Descriptive epidemiological method were applied for the analyses. The chi-square test was used to compare the infected species and the distribution of occupation and year among imported malaria cases with different onset times. The Mann-Whitney U test was used to compare the time interval from the return date to diagnosis between recurrent cases and cases diagnosed for the first time, as well as the difference between cases with disease onset before and after entry. Results A total of 334 imported malaria cases were included in this study. The cases were mainly young and middle-aged males(91.32%), and 135 cases(40.42%)were employees of large state-owned enterprises. Falciparum malaria accounted for the highest proportion(84.73%), and 94.61% of all confirmed imported malaria cases were from Africa. For the recurrent and first-diagnosed cases, the difference in the time interval from entry to diagnosis was statistically significant(U=2129.500, P＜ 0.05). Among patients with disease onset over 7 days after entry, the proportion of falciparum malaria was lower than those of other types of malaria infections(χ2=11.180, P=0.004). Conclusions Imported falciparum malaria from Africa remains the main challenge to maintaining and consolidating China's achievements in malaria elimination. It is recommended to further strengthen health education for outbound workers and port inspection for key inbound personnel, standardize epidemiological investigations and information notifications, and comprehensively enhance the capability for detecting and managing imported malaria cases.
