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.