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J Infect Dis ; 225(10): 1688-1693, 2022 05 16.
Article in English | MEDLINE | ID: covidwho-1853095

ABSTRACT

We compared the ability of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike-specific antibodies to induce natural killer cell-mediated antibody-dependent cellular cytotoxicity (ADCC) in patients with natural infection and vaccinated persons. Analyzing plasma samples from 39 coronavirus disease 2019 (COVID-19) patients and 11 vaccinated individuals, significant induction of ADCC could be observed over a period of more than 3 months in both vaccinated and recovered individuals. Although plasma antibody concentrations were lower in recovered patients, we found antibodies elicited by natural infection induced a significantly stronger ADCC response compared to those induced by vaccination, which may affect protection conferred by vaccination.


Subject(s)
COVID-19 , SARS-CoV-2 , Antibodies, Neutralizing , Antibodies, Viral , Antibody-Dependent Cell Cytotoxicity , COVID-19/prevention & control , Humans , Killer Cells, Natural , Spike Glycoprotein, Coronavirus , Vaccination
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