Frequent occurrence of sars-cov-2 transmission among non-close contacts exposed to covid-19 patients

Jiwon Jung; Jungmin Lee; Eunju Kim; Songhee Namgung; Younjin Kim; Mina Yun; Young Ju Lim; Eun Ok Kim; Seongman Bae; Mi Na Kim; Sun Mi Lee; Man Seong Park; Sung Han Kim

doi:10.3346/jkms.2021.36.e233

Frequent occurrence of sars-cov-2 transmission among non-close contacts exposed to covid-19 patients

Jiwon Jung, Jungmin Lee, Eunju Kim, Songhee Namgung, Younjin Kim, Mina Yun, Young Ju Lim, Eun Ok Kim, Seongman Bae, Mi Na Kim, Sun Mi Lee, Man Seong Park, Sung Han Kim

Department of Biomedical Sciences

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission among non-close contacts is not infrequent. We evaluated the proportion and circumstances of individuals to whom SARS-CoV-2 was transmitted without close contact with the index patient in a nosocomial outbreak in a tertiary care hospital in Korea. From March 2020 to March 2021, there were 36 secondary cases from 14 SARS-CoV-2 infected individuals. Of the 36 secondary cases, 26 (72%) had been classified as close contact and the remaining 10 (28%) were classified as non-close contact. Of the 10 non-close contact, 4 had short conversations with both individuals masked, 4 shared a space without any conversation with both masked, and the remaining 2 entered the space after the index had left. At least one quarter of SARS-CoV-2 transmissions occurred among non-close contacts. The definition of close contact for SARS-CoV-2 exposure based on the mode of droplet transmission should be revised to reflect the airborne nature of SARS-CoV-2 transmission

Original language	English
Pages (from-to)	1-6
Number of pages	6
Journal	Journal of Korean medical science
Volume	36
Issue number	33
DOIs	https://doi.org/10.3346/jkms.2021.36.e233
Publication status	Published - 2021 Aug

Keywords

Close Contact
Contact Tracing
COVID-19
SARS-CoV-2

ASJC Scopus subject areas

Medicine(all)

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10.3346/jkms.2021.36.e233

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title = "Frequent occurrence of sars-cov-2 transmission among non-close contacts exposed to covid-19 patients",

abstract = "Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission among non-close contacts is not infrequent. We evaluated the proportion and circumstances of individuals to whom SARS-CoV-2 was transmitted without close contact with the index patient in a nosocomial outbreak in a tertiary care hospital in Korea. From March 2020 to March 2021, there were 36 secondary cases from 14 SARS-CoV-2 infected individuals. Of the 36 secondary cases, 26 (72%) had been classified as close contact and the remaining 10 (28%) were classified as non-close contact. Of the 10 non-close contact, 4 had short conversations with both individuals masked, 4 shared a space without any conversation with both masked, and the remaining 2 entered the space after the index had left. At least one quarter of SARS-CoV-2 transmissions occurred among non-close contacts. The definition of close contact for SARS-CoV-2 exposure based on the mode of droplet transmission should be revised to reflect the airborne nature of SARS-CoV-2 transmission",

keywords = "Close Contact, Contact Tracing, COVID-19, SARS-CoV-2",

author = "Jiwon Jung and Jungmin Lee and Eunju Kim and Songhee Namgung and Younjin Kim and Mina Yun and Lim, {Young Ju} and Kim, {Eun Ok} and Seongman Bae and Kim, {Mi Na} and Lee, {Sun Mi} and Park, {Man Seong} and Kim, {Sung Han}",

note = "Funding Information: This study was supported by a grant (no. HW20C2062) from the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI) funded by the Ministry of Health & Welfare, South Korea Publisher Copyright: {\textcopyright} 2021 The Korean Academy of Medical Sciences. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited",

year = "2021",

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doi = "10.3346/jkms.2021.36.e233",

language = "English",

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AU - Jung, Jiwon

AU - Lee, Jungmin

AU - Kim, Eunju

AU - Namgung, Songhee

AU - Kim, Younjin

AU - Yun, Mina

AU - Lim, Young Ju

AU - Kim, Eun Ok

AU - Bae, Seongman

AU - Kim, Mi Na

AU - Lee, Sun Mi

AU - Park, Man Seong

AU - Kim, Sung Han

N1 - Funding Information: This study was supported by a grant (no. HW20C2062) from the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI) funded by the Ministry of Health & Welfare, South Korea Publisher Copyright: © 2021 The Korean Academy of Medical Sciences. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited

PY - 2021/8

Y1 - 2021/8

N2 - Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission among non-close contacts is not infrequent. We evaluated the proportion and circumstances of individuals to whom SARS-CoV-2 was transmitted without close contact with the index patient in a nosocomial outbreak in a tertiary care hospital in Korea. From March 2020 to March 2021, there were 36 secondary cases from 14 SARS-CoV-2 infected individuals. Of the 36 secondary cases, 26 (72%) had been classified as close contact and the remaining 10 (28%) were classified as non-close contact. Of the 10 non-close contact, 4 had short conversations with both individuals masked, 4 shared a space without any conversation with both masked, and the remaining 2 entered the space after the index had left. At least one quarter of SARS-CoV-2 transmissions occurred among non-close contacts. The definition of close contact for SARS-CoV-2 exposure based on the mode of droplet transmission should be revised to reflect the airborne nature of SARS-CoV-2 transmission

AB - Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission among non-close contacts is not infrequent. We evaluated the proportion and circumstances of individuals to whom SARS-CoV-2 was transmitted without close contact with the index patient in a nosocomial outbreak in a tertiary care hospital in Korea. From March 2020 to March 2021, there were 36 secondary cases from 14 SARS-CoV-2 infected individuals. Of the 36 secondary cases, 26 (72%) had been classified as close contact and the remaining 10 (28%) were classified as non-close contact. Of the 10 non-close contact, 4 had short conversations with both individuals masked, 4 shared a space without any conversation with both masked, and the remaining 2 entered the space after the index had left. At least one quarter of SARS-CoV-2 transmissions occurred among non-close contacts. The definition of close contact for SARS-CoV-2 exposure based on the mode of droplet transmission should be revised to reflect the airborne nature of SARS-CoV-2 transmission

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Frequent occurrence of sars-cov-2 transmission among non-close contacts exposed to covid-19 patients

Abstract

Keywords

ASJC Scopus subject areas

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