Frequent Occurrence of SARS-CoV-2 Transmission among Non-close Contacts Exposed to COVID-19 Patients
- Authors
- Jung, Jiwon; Lee, Jungmin; Kim, Eunju; Namgung, Songhee; Kim, Younjin; Yun, Mina; Lim, Young-Ju; Kim, Eun Ok; Bae, Seongman; Kim, Mi-Na; Lee, Sun-Mi; Park, Man-Seong; Kim, Sung-Han
- Issue Date
- 23-8월-2021
- Publisher
- KOREAN ACAD MEDICAL SCIENCES
- Keywords
- COVID-19; Close Contact; Contact Tracing; SARS-CoV-2
- Citation
- JOURNAL OF KOREAN MEDICAL SCIENCE, v.36, no.33, pp.1 - 6
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF KOREAN MEDICAL SCIENCE
- Volume
- 36
- Number
- 33
- Start Page
- 1
- End Page
- 6
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/136825
- DOI
- 10.3346/jkms.2021.36.e233
- ISSN
- 1011-8934
- 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.
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