Epidemiol Health.
2024;46(1):e2024087. 10.4178/epih.e2024087.
Characteristics of imported and domestic malaria cases in Gyeonggi Province, Korea
- Affiliations
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- 1Institute for Health and Society, Hanyang University, Seoul, Korea
- 2Department of Statistics and Data Science, Graduate School, Dongguk University, Seoul, Korea
- 3National Health Insurance Service, Wonju, Korea
- 4Gyeonggi Infectious Disease Control Center, Suwon, Korea
- 5Department of Social and Preventive Medicine, Sungkyunkwan University School of Medicine, Suwon, Korea
- 6Department of Preventive Medicine, Hanyang University College of Medicine, Seoul, Korea
- KMID: 2564557
- DOI: http://doi.org/10.4178/epih.e2024087
Abstract
OBJECTIVES
This study explored 11 years of malaria data from mandatory reporting in Gyeonggi Province, Korea, to provide information for prevention strategies by linkage to nationwide health claims data.
METHODS
Reported malaria cases in Gyeonggi Province from 2011 to 2021 were linked to medical usage data from the National Health Insurance Database. Data about hospitalization, antibiotic prescription and duration, malarial species, and sociodemographic information of the cases were included.
RESULTS
Between 2011 and 2021, a total of 3,011 malaria cases were reported, consisting of 2,828 domestic (93.9%) and 183 imported (6.1%) cases. Over 80% of the cases involved males, with the majority of patients being in their 20s. Both domestic and imported cases peaked between June and August over the years. Imported cases had a higher hospitalization rate (66.9%) compared to domestically-acquired cases (54.9%). There was a significant variation in treatment rates, with 80.7% of imported cases and 74.6% of domestic cases receiving treatment. For domestic cases, chloroquine combined with primaquine was the most commonly prescribed treatment (77.0%), while atovaquone-proguanil was frequently used for imported cases (25.9%). Plasmodium vivax was the predominant species in domestic cases (94.9%), whereas P. malariae was more common in imported cases (62.3%). The overall number of reported malaria cases declined following a sharp decrease in imported cases in 2020 and 2021.
CONCLUSIONS
Despite a decreasing trend in malaria cases reported in Gyeonggi Province, imported cases exhibited higher hospitalization rates and different antibiotic prescription and treatment patterns, reflecting the presence of a different malarial species.
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