IMPORTED MALARIA CASES FOLLOWING LOCAL MALARIA ELIMINATION IN MINHANG DISTRICT,SHANGHAI
10.3969/j.issn.1005-0507.2024.04.001
- VernacularTitle:上海市闵行区消除疟疾后输入性疟疾疫情分析
- Author:
Yu-Ping CHENG
1
;
Lu ZHANG
;
Zhou-Yun WANG
;
Dun-Jia WANG
;
Min-Hui ZHU
;
Lin-Juan DONG
;
Yi-Bin ZHOU
Author Information
1. 上海市闵行区疾病预防控制中心,上海 201101
- Keywords:
Malaria;
Imported malaria;
Eliminate;
Monitoring
- From:
Acta Parasitologica et Medica Entomologica Sinica
2024;31(4):193-198
- CountryChina
- Language:Chinese
-
Abstract:
Objective The aim of the paper is to analyze the characteristics of imported malaria cases in Minhang District after local malaria elimination,and to improve prevention and control measures.Methods As local malaria was announced eliminated in Shanghai,in 2015,the malaria cases report information in Minhang District from 2016 to 2023 were enrolled to analyze the epidemic characteristics,infection sources,and treatment of malaria with descriptive epidemiological methods.Results A total of 47 cases were reported in Minhang District from 2016 to 2023,all of which were imported cases confirmed by the laboratory,mainly falciparum malaria.The overall proportion of falciparum malaria after 2020 was significantly higher than that from 2016 to 2019,with a statistically significant difference.There was no obvious seasonality in the onset of malaria cases,with a peak in February(six cases,12.77%)and a low in June(one case,2.13%).Most cases were young to middle-aged males and employed workers.All cases originated in Africa,mainly West Africa(35 cases,65.96%).Therewere 35 cases(74.47%)that occurred within two weeks of arrival and 89.36%of cases preferred tertiary medical facilities for medical services.The initial correct diagnosis rate was 78.72%.The median interval from onset to diagnosis was one day.The median interval from onset to entry was three days for falciparum,74 days for ovale,and two days for vivax malaria.Conclusions Malaria surveillance capacity in Minhang District remained excellent after local malaria elimination.However,imported malaria cases still pose a threat to public health,and multi-sectoral collaboration and health administration should be strengthened to improve clinical malaria screening capacity,diagnostic techniques,and medical management in the future.
