KMID : 0880220210590050530
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Journal of Microbiology 2021 Volume.59 No. 5 p.530 ~ p.533
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Differences in seroprevalence between epicenter and non-epicenter areas of the COVID-19 outbreak in South Korea
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Jeong Hye-Won
Chang Hyun-Ha Kim Eun-Ji Kim Yu-Kyung Kim Se-Mi Kim Eun-Ha Kim Young-Il Casel Mark Anthony B. Kim Seong-Gyu Rollon Rare G. Jang Seung-Gyu Yu Kwang-Min Kim Hee-Sung Park Hee-Sue Park Su-Jin Kim Yong-Dae Kim Eung-Gook Choi Young-Ki
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Abstract
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To compare the standardized severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) seroprevalence of high epicenter region with non-epicenter region, serological studies were performed with a total of 3,268 sera from Daegu City and 3,981 sera from Chungbuk Province. Indirect immunofluorescence assay (IFA) for SARS-CoV-2 IgG results showed a high seroprevalence rate in the Daegu City (epicenter) compared with a non-epicenter area (Chungbuk Province) (1.27% vs. 0.91%, P = 0.0358). It is noteworthy that the highest seroprevalence in Daegu City was found in elderly patients (70¡¯s) whereas young adult patients (20¡¯s) in Chungbuk Province showed the highest seroprevalence. Neutralizing antibody (NAb) titers were found in three samples from Daegu City (3/3, 268, 0.09%) while none of the samples from Chungbuk Province were NAb positive. These results demonstrated that even following the large outbreak, the seropositive rate of SARS-CoV-2 in the general population remained low in South Korea.
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KEYWORD
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SARS-CoV-2, COVID-19, epicenter, seroprevalence, South Korea
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