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Protective characteristics of COVID-19 convalescent and post-vaccination IgG antibodies (preprint)
EuropePMC; 2021.
Preprint in English | EuropePMC | ID: ppcovidwho-292997
ABSTRACT
Soon after commencement of the SARS-CoV-2 disease outbreak of 2019 (COVID-19), it became evident that the receptor-binding domain of the viral spike protein is the target of neutralizing antibodies that comprise a critical element of protective immunity to the virus. This study addresses the relative lack of information regarding actual antibody concentrations in convalescent plasma samples from COVID-19 patients and extends these analyses to post-vaccination samples to estimate protective IgG antibody (Ab) levels. Both sample populations were similar and a protective Ab level of 7.5 μg/ml was determined, based on 95% of the normal distribution of the post-vaccination population. The results of this study have implications for future vaccine development, projection of protective efficacy duration, and understanding of the immune response to SARS-CoV-2 infection.

Full text: Available Collection: Preprints Database: EuropePMC Topics: Vaccines Language: English Year: 2021 Document Type: Preprint

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Full text: Available Collection: Preprints Database: EuropePMC Topics: Vaccines Language: English Year: 2021 Document Type: Preprint