tetano
Editor, Senior Moderator
J Prev Med Public Health
. 2021 Jul;54(4):245-250.
doi: 10.3961/jpmph.21.286. Epub 2021 Jun 30.
Sources of Infection Among Confirmed Cases of COVID-19 in Jeju Province, Korea
Moonkyong Hwang[SUP] 1 [/SUP], Jong-Myon Bae[SUP] 1 2 [/SUP]
Affiliations
Abstract
Objectives: Jeju Province in Korea reported 627 coronavirus disease 2019 (COVID-19) cases between January 20, 2020, and March 31, 2021. This study analyzed the sources of infection among confirmed cases in Jeju Province, a self-governed island.
Methods: The sources of infection were broadly categorized as follows: (1) infections from overseas (confirmed patients who reported travel overseas or contact with overseas travelers); (2) infections from outside Jeju Province (confirmed patients who had visited other provinces or had contact with individuals who had traveled to other provinces in Korea); and (3) unknown sources of infection (confirmed patients who were infected following contact with an infected person whose source of infection was unknown). The chi-square test was used to analyze the differences in the distributions of related variables for each source of infection.
Results: Of the 627 confirmed cases, 38 (6.1%) were infections from overseas sources, 199 (31.7%) were from outside of Jeju Province, and 390 (62.2%) were from unknown sources. Jeju Province had no cases with an unknown source of infection during the first and second waves of the nationwide outbreak.
Conclusions: Infections from overseas sources could be blocked from spreading to local communities in Jeju Province by conducting screening at the airport, along with the preemptive suspension of visa-free entry. In addition, considering the scale of the nationwide outbreak, measures must be established to delay outbreaks from unknown sources of infection caused by sources outside Jeju Province.
Keywords: COVID-19; Communicable disease control; Outbreaks; SARS-CoV-2.
. 2021 Jul;54(4):245-250.
doi: 10.3961/jpmph.21.286. Epub 2021 Jun 30.
Sources of Infection Among Confirmed Cases of COVID-19 in Jeju Province, Korea
Moonkyong Hwang[SUP] 1 [/SUP], Jong-Myon Bae[SUP] 1 2 [/SUP]
Affiliations
- PMID: 34370937
- DOI: 10.3961/jpmph.21.286
Abstract
Objectives: Jeju Province in Korea reported 627 coronavirus disease 2019 (COVID-19) cases between January 20, 2020, and March 31, 2021. This study analyzed the sources of infection among confirmed cases in Jeju Province, a self-governed island.
Methods: The sources of infection were broadly categorized as follows: (1) infections from overseas (confirmed patients who reported travel overseas or contact with overseas travelers); (2) infections from outside Jeju Province (confirmed patients who had visited other provinces or had contact with individuals who had traveled to other provinces in Korea); and (3) unknown sources of infection (confirmed patients who were infected following contact with an infected person whose source of infection was unknown). The chi-square test was used to analyze the differences in the distributions of related variables for each source of infection.
Results: Of the 627 confirmed cases, 38 (6.1%) were infections from overseas sources, 199 (31.7%) were from outside of Jeju Province, and 390 (62.2%) were from unknown sources. Jeju Province had no cases with an unknown source of infection during the first and second waves of the nationwide outbreak.
Conclusions: Infections from overseas sources could be blocked from spreading to local communities in Jeju Province by conducting screening at the airport, along with the preemptive suspension of visa-free entry. In addition, considering the scale of the nationwide outbreak, measures must be established to delay outbreaks from unknown sources of infection caused by sources outside Jeju Province.
Keywords: COVID-19; Communicable disease control; Outbreaks; SARS-CoV-2.