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KMID : 1143420220150211453
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Public Health Weekly Report
2022 Volume.15 No. 21 p.1453 ~ p.1459
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A brief report of COVID-19 test results of overseas entrants to Republic of Korea as requested by two quarantine stations in 2021
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Jung Sang-Oun
Kang Ka-Ram
Jang Han-Seul
Park Sang-Mi
Kim Young-Jee
Han Ji-Hye
Nam Geong-Gu
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Abstract
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This report analyzed the coronavirus disease (COVID-19) test results of overseas entrants to Republic of Korea (ROK) as
requested by two national quarantine stations (Incheon International Airport and Incheon Port) in 2021. The total number of
tests performed in 2021 was 28,401, and the monthly average number of tests was 2,367. The number of tested overseas
entrants at Incheon International Airport was 24,120 (84.9%), and the test number at Incheon Port was 4,281 (15.1%).
According to the analysis by country of arrivals through Incheon International Airport, the U.S. accounted for the largest
portion at 29.3%, followed by Indonesia (6.5%), Japan (6.4%), China (5.1%), and India (4.4%). In the case of Incheon Port,
China accounted for 33.7%, followed by Japan (5.9%) and Singapore (4.7%). The total number of positive cases was 1,423
(5.0%) of the COVID-19 tests conducted in 2021. Of the total COVID-19 positive cases of inbound travelers, 1,355 (94.5%)
cases were confirmed at Incheon International Airport, and 68 cases (4.8%) were confirmed at Incheon Port. Monthly
positive rates increased to 5.9% in April and decreased after increasing to 8.1% and 11.5% in June and July. An increase was also recorded in December. These temporary increases in monthly positive rates were attributed to the increase of positive cases entering from India (April) and from Indonesia (June and July). Notably, COVID-19 outbreaks were confirmed in India and in Indonesia during those same periods. As the conclusion. the rapid and accurate laboratory testing during the quarantine stage was important to effectively block and manage the inflow of infectious diseases from overseas into Korea. For this purpose, it would be helpful to continuously promote the expansion of the types of infectious diseases that can be tested, maintaining test suitability and expertise through Quality Control (Q.C.), and strengthening monitoring functions for the characteristics of infectious disease pathogens.
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KEYWORD
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Coronavirus disease 2019, Quarantine, Diagnostic test, Infectious disease, Outbreaks
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