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. 2020 Aug 24;35(33):e311.
doi: 10.3346/jkms.2020.35.e311.

Seroprevalence of Anti-SARS-CoV-2 Antibodies among Outpatients in Southwestern Seoul, Korea

Ji Yun Noh #  1 , Yu Bin Seo #  2 , Jin Gu Yoon  1 , Hye Seong  1 , Hakjun Hyun  1 , Jacob Lee  2 , Nuri Lee  3 , Seri Jung  3 , Min Jeong Park  3 , Wonkeun Song  3 , Jung Yoon  4 , Chae Seung Lim  4 , Jungsang Ryou  5 , Joo Yeon Lee  5 , Sung Soon Kim  5 , Hee Jin Cheong  1 , Woo Joo Kim  1 , Soo Young Yoon  6 , Joon Young Song  7
Affiliations

Seroprevalence of Anti-SARS-CoV-2 Antibodies among Outpatients in Southwestern Seoul, Korea

Ji Yun Noh et al. J Korean Med Sci. .

Abstract

Serosurveillance studies reveal the actual disease burden and herd immunity level in the population. In Seoul, Korea, a cross-sectional investigation showed 0.07% anti-severe acute respiratory syndrome coronavirus-2 antibody seropositivity among 1,500 outpatients of the university hospitals. Low seroprevalence reflects well-implemented social distancing. Serosurveillance should be repeated as the pandemic progresses.

Keywords: COVID-19; SARS-CoV-2; Seroepidemiology; Seroprevalence.

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Conflict of interest statement

The authors have no potential conflicts of interest to disclose.

Figures

Fig. 1
Fig. 1. Map of study site with study hospitals marked in blue. Sites of clusters of coronavirus disease outbreaks near the study hospitals are shown in red: ⓐ sports club, ⓑ call center, ⓒ church, ⓓ distribution center. The COVID-19 outbreak in a sport club (ⓐ) was detected on Jun 5, 2020, and visitors at the sport club from May 28 to June 2, 2020 were investigated. A call center (ⓑ) outbreak was first detected on March 9, 2020. Outbreak in a church (ⓒ) was detected on March 26, 2020 and outbreak at the distribution center (ⓓ) was detected on May 25, 2020.
Fig. 2
Fig. 2. Number of cases of coronavirus disease as of July 3, 2020 in Korea. Study samples were collected from May 25 to May 29, 2020 (indicated with an arrow).
See this image and copyright information in PMC

References

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