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Oxford University Press - PMC COVID-19 Collection logoLink to Oxford University Press - PMC COVID-19 Collection
. 2020 Sep 23:ciaa1368. doi: 10.1093/cid/ciaa1368

Serum antibody profile of a patient with COVID-19 reinfection

Kelvin Kai-Wang To 1,2,1, Ivan Fan-Ngai Hung 3,1, Kwok-Hung Chan 1, Shuofeng Yuan 1, Wing-Kin To 4, Dominic Ngai-Chong Tsang 5, Vincent Chi-Chung Cheng 1,2, Zhiwei Chen 1, Kin-Hang Kok 1, Kwok-Yung Yuen 1,2,
PMCID: PMC7543314  PMID: 32966566

Abstract

We recently reported a patient with COVID-19 reinfection. Here, we showed that serum neutralizing antibody could be detected during the first episode but not at presentation of the second episode. During reinfection, neutralizing antibody and high avidity IgG were found within 8 days after hospitalization, while IgM response was absent.

Keywords: COVID-19, SARS-CoV-2, re-infection, antibody, immunity


Articles from Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America are provided here courtesy of Oxford University Press

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