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Infectious diseases / Original Article
Cytokine profiles associated with persisting symptoms of post-acute sequelae of COVID-19
Ji-Soo Kwon, Euijin Chang, Hyeon Mu Jang, Ji Yeun Kim, Woori Kim, Ju Yeon Son, Junho Cha, Choi Young Jang, Seongman Bae, Jiwon Jung, Min Jae Kim, Yong Pil Chong, Sang-Oh Lee, Sang-Ho Choi, Yang Soo Kim, Sung-Han Kim
Korean J Intern Med. 2025;40(4):667-675. Published online July 1, 2025
Background/Aims: Post-acute sequelae of COVID-19 (PASC) are highly heterogeneous; therefore, the pathophysiological mechanisms for PASC remain unclear. In this study, we aimed to examine the immunologic aspects of various PASC symptoms.
Methods: We prospectively enrolled adults aged ≥ 18 years wh..
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Infectious diseases / Original Article
Comparison of the rapidity of SARS-CoV-2 immune responses between primary and booster vaccination for COVID-19
Ji Yeun Kim, Ji-Soo Kwon, Hye Hee Cha, So Yun Lim, Seongman Bae, Sung-Han Kim
Korean J Intern Med. 2022;37(6):1234-1240. Published online October 11, 2022
Background/Aims: The rapidity of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific memory B or T cell response in vaccinated individuals is important for our understanding of immunopathogenesis of coronavirus disease 2019 (COVID-19). We therefore compared the timing of adequate ..
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Infectious diseases / Original Article
Comparison of antibody responses after the 1st and 2nd doses of COVID-19 vaccine with those of patients with mild or severe COVID-19
Hye Hee Cha, So Yun Lim, Ji-Soo Kwon, Ji Yeun Kim, Seongman Bae, Jiwon Jung, Sung-Han Kim
Korean J Intern Med. 2022;37(2):455-459. Published online February 28, 2022
Background/Aims: Data comparing the antibody responses of different coronavirus disease 2019 (COVID-19) vaccine platforms according to dose with natural severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection-induced antibody responses are limited.
Methods: Blood samples from adult p..
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Infectious diseases / Original Article
Varicella zoster virus (VZV)-specific immunity and subclinical VZV reactivation in patients with autoimmune diseases
Kwang-Hoon Lee, Sungim Choi, Ji-Soo Kwon, Sung-Han Kim, Seong Yeon Park
Korean J Intern Med. 2021;36(4):992-1000. Published online June 15, 2021
Background/Aims: The risk of herpes zoster (HZ) is increased in patients with autoimmune diseases (AID), probably due to immunosuppressive therapy.
Methods: This prospective cross-sectional study investigated varicella zoster virus (VZV)-specific immunity in relation to subclinical VZV reactivation..
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