Epidemiological characteristics of imported malaria related to international travel in the Republic of Korea from 2009 to 2018

Abstract Malaria, transmitted by mosquitoes infected with Plasmodium parasites, remains a significant health issue with global travel increasing the risk of imported malaria. This study investigates imported malaria cases in the Republic of Korea from 2009 to 2018 using data from the Korea National...

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Main Authors: Byoung Hak Jeon, Jung Ah Lee, Shin Young Lee, Sang Eun Lee, Joon Sup Yeom
Format: Article
Language:English
Published: Nature Portfolio 2025-01-01
Series:Scientific Reports
Subjects:
Online Access:https://doi.org/10.1038/s41598-024-84124-6
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author Byoung Hak Jeon
Jung Ah Lee
Shin Young Lee
Sang Eun Lee
Joon Sup Yeom
author_facet Byoung Hak Jeon
Jung Ah Lee
Shin Young Lee
Sang Eun Lee
Joon Sup Yeom
author_sort Byoung Hak Jeon
collection DOAJ
description Abstract Malaria, transmitted by mosquitoes infected with Plasmodium parasites, remains a significant health issue with global travel increasing the risk of imported malaria. This study investigates imported malaria cases in the Republic of Korea from 2009 to 2018 using data from the Korea National Infectious Disease Surveillance System. During this period, 601 imported cases were reported, with 82.4% male patients and a median age of 39.1 years. Most cases (76.5%) involved Korean residents returning from malaria-endemic areas, mainly Africa and Asia. Plasmodium falciparum (55.7%) and Plasmodium vivax (30.3%) were the predominant species. The annual percent change in incidence rate was 6.45%. Notably, 71.5% of the patients did not receive prophylactic chemotherapy, and 18% of those who did still developed malaria. Median diagnostic delays were 4 days for P. falciparum and 7 days for P. vivax. The case fatality rate was 2.3%, with all deaths occurring in travelers who contracted P. falciparum in Africa. This study emphasizes the ongoing risk of imported malaria in the ROK and highlights the need for better awareness and preventive measures among travelers. Enhancing surveillance and educating travelers on anti-malaria chemoprophylaxis are crucial.
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spelling doaj-art-023ad839d08d4100a858584a4af86fc02025-01-05T12:17:19ZengNature PortfolioScientific Reports2045-23222025-01-011511910.1038/s41598-024-84124-6Epidemiological characteristics of imported malaria related to international travel in the Republic of Korea from 2009 to 2018Byoung Hak Jeon0Jung Ah Lee1Shin Young Lee2Sang Eun Lee3Joon Sup Yeom4Infectious Disease Research Center, Seoul Metropolitan Government, Citizens’ Health BureauDivision of Infectious Diseases, Department of Internal Medicine, Yonsei University College of Medicine, Yonsei University Health System Division of antimicrobial Resistance Control, Korea Disease Control and Prevention AgencyEpidemiological Investigation Team, Central Disease Control Headquarters, Korea Disease Control and Prevention AgencyDivision of Infectious Diseases, Department of Internal Medicine, Yonsei University College of Medicine, Yonsei University Health System Abstract Malaria, transmitted by mosquitoes infected with Plasmodium parasites, remains a significant health issue with global travel increasing the risk of imported malaria. This study investigates imported malaria cases in the Republic of Korea from 2009 to 2018 using data from the Korea National Infectious Disease Surveillance System. During this period, 601 imported cases were reported, with 82.4% male patients and a median age of 39.1 years. Most cases (76.5%) involved Korean residents returning from malaria-endemic areas, mainly Africa and Asia. Plasmodium falciparum (55.7%) and Plasmodium vivax (30.3%) were the predominant species. The annual percent change in incidence rate was 6.45%. Notably, 71.5% of the patients did not receive prophylactic chemotherapy, and 18% of those who did still developed malaria. Median diagnostic delays were 4 days for P. falciparum and 7 days for P. vivax. The case fatality rate was 2.3%, with all deaths occurring in travelers who contracted P. falciparum in Africa. This study emphasizes the ongoing risk of imported malaria in the ROK and highlights the need for better awareness and preventive measures among travelers. Enhancing surveillance and educating travelers on anti-malaria chemoprophylaxis are crucial.https://doi.org/10.1038/s41598-024-84124-6Imported malariaEpidemiologyPlasmodium falciparumPlasmodium vivaxTravel medicine
spellingShingle Byoung Hak Jeon
Jung Ah Lee
Shin Young Lee
Sang Eun Lee
Joon Sup Yeom
Epidemiological characteristics of imported malaria related to international travel in the Republic of Korea from 2009 to 2018
Scientific Reports
Imported malaria
Epidemiology
Plasmodium falciparum
Plasmodium vivax
Travel medicine
title Epidemiological characteristics of imported malaria related to international travel in the Republic of Korea from 2009 to 2018
title_full Epidemiological characteristics of imported malaria related to international travel in the Republic of Korea from 2009 to 2018
title_fullStr Epidemiological characteristics of imported malaria related to international travel in the Republic of Korea from 2009 to 2018
title_full_unstemmed Epidemiological characteristics of imported malaria related to international travel in the Republic of Korea from 2009 to 2018
title_short Epidemiological characteristics of imported malaria related to international travel in the Republic of Korea from 2009 to 2018
title_sort epidemiological characteristics of imported malaria related to international travel in the republic of korea from 2009 to 2018
topic Imported malaria
Epidemiology
Plasmodium falciparum
Plasmodium vivax
Travel medicine
url https://doi.org/10.1038/s41598-024-84124-6
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