Epidemiological analysis of imported malaria in Yunnan Province,2020-2023
10.3969/j.issn.1002-2694.2025.00.029
- VernacularTitle:2020-2023年云南省输入性疟疾流行病学特征分析
- Author:
Chun-li DING
1
;
Yao-wu ZHOU
1
;
Zu-rui LIN
1
;
Xiao-dong SUN
1
;
Chun WEI
1
;
Jian-wei XU
1
;
Ya-ming YANG
1
Author Information
1. 云南省寄生虫病防治所,云南省虫媒传染病防控研究重点实验室,云南省寄生虫病防治所虫媒传染病防控关键技术省创新团队,面向南亚东南亚热带病国际科技人员交流与教育培训基地,普洱 665000
- Publication Type:Journal Article
- Keywords:
imported malaria;
importation pathway;
cross-border mosquito borne transmission;
epidemiological character-istics
- From:
Chinese Journal of Zoonoses
2025;41(2):193-199
- CountryChina
- Language:Chinese
-
Abstract:
This study analyzed the epidemiological characteristics of imported malaria in Yunnan Province from 2020 to 2023,to provide scientific evidence for formulating measures to decrease imported malaria and prevent re-establishment of malaria transmission.Malaria data reported by the China Disease Prevention and Control Information System were analyzed to determine parasite species;sources of infection;temporal,spatial,and population distributions;and importation routes.A total of 828 malaria cases were reported in the province.Plasmodium vivax and Plasmodium falciparum accounted for 89.98％and 8.33％of cases,respectively.A total of 47.58％of cases were imported from Myanmar,and all P.falciparum malaria ca-ses were from Africa.Thirteen(81.25％)prefectures or municipalities reported malaria,among which Dehong,Baoshan,Kunming,and Lincang reported 94.32％of cases.A total of 52.54％of cases were in young men.The proportion of cross-bor-der personnel flow,land input,and aircraft input were 88.89％and 11.11％respectively.A total of 98.19％of patients sought medical care within 7 days after fever onset,and 82.85％initiated diagnosis for malaria,and 84.90％of diagnoses were con-firmed by health facilities at or below the county level.Imported malaria is a major challenge in preventing re-establishment of transmission in Yunnan.Most imported cases involved cross-border malaria transmission of mainly Plasmodium vivax between China and Myanmar.To achieve malaria elimination,vigilance of health staff in malaria diagnosis and treatment should be pro-moted,and intensive malaria health education should be provided to people traveling to malaria endemic territories,to enable individual protection,and timely diagnosis and treatment after return from endemic countries.
