Epidemiological analysis of coronavirus disease (COVID-19) patients on ships arriving at Busan port in Korea, 2020.

Publication date: Jul 14, 2023

Quarantine played an important role in preventing the spread of infectious diseases between countries in the early stages of the COVID-19 outbreak. In particular, in ports, infection during transit can cause a large number of patients on board ships and can flow into the community. In this study investigated cause of the cause of transmission in ships and suggested the way of preventing secondary transmission by analyzing clinical and epidemiological characteristics of COVID-19 patients identified at Busan Port (South Korea) in 2020. During the study period, out of 19,396 ships that arrived at Busan Port, 50 ships had COVID-19 confirmed cases. Among the 50 ships, type of deep-sea fishing vessels (24 ships, 48. 0%), ships weighing less than 5,000 tons (31 ships, 62. 0%), and ships from Russia (41 ships, 82. 0%) had the highest positivity rates. Total 283 of the 25,450 arrivals tested positive for COVID-19 (a positivity rate of 1. 1%), and 270 (95. 4%) were asymptomatic. Moreover, the number of COVID-19 patients increased with the duration of the waiting period between arrival and sample collection (12. 7% to 37. 4%), and the positivity rate was significantly higher for those working as stewards (64. 3%). These results indicate secondary transmission was active on board ships and that infection among stewards importantly contributed to group outbreaks. In addition, onboard residence time after arrival significantly elevated to COVID-19 positivity rates, indicating that rapid isolation, as determined using various screening techniques, might be effective at preventing onboard transmission and subsequent community outbreaks.

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Concepts Keywords
Coronavirus Board
Epidemiological Busan
Fishing Community
Korea Covid


Type Source Name
pathway KEGG Coronavirus disease
disease MESH COVID-19
disease MESH infectious diseases
disease MESH infection
disease VO time
disease VO effective
pathway REACTOME Reproduction
disease MESH reinfection
disease VO vaccination
drug DRUGBANK Sulodexide
disease VO USA
disease VO protocol
disease VO monthly
disease IDO production
disease MESH sore throat
disease VO Canada

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