"Antibody Response to SARS-CoV-2 Infection and Vaccination in COVID-19-" by Susan L. Uprichard, Amornrat O'Brien et al.
 

Document Type

Article

Publication Date

2-10-2022

Publication Title

Viruses

Volume

14

Issue

2

Pages

1-16

Publisher Name

MDPI

Publisher Location

Basel, Switzerland

Abstract

Understanding the magnitude of responses to vaccination during the ongoing SARS-CoV-2 pandemic is essential for ultimate mitigation of the disease. Here, we describe a cohort of 102 subjects (70 COVID-19-naïve, 32 COVID-19-experienced) who received two doses of one of the mRNA vaccines (BNT162b2 (Pfizer–BioNTech) and mRNA-1273 (Moderna)). We document that a single exposure to antigen via infection or vaccination induces a variable antibody response which is affected by age, gender, race, and co-morbidities. In response to a second antigen dose, both COVID-19-naïve and experienced subjects exhibited elevated levels of anti-spike and SARS-CoV-2 neutralizing activity; however, COVID-19-experienced individuals achieved higher antibody levels and neutralization activity as a group. The COVID-19-experienced subjects exhibited no significant increase in antibody or neutralization titer in response to the second vaccine dose (i.e., third antigen exposure). Finally, we found that COVID-19-naïve individuals who received the Moderna vaccine exhibited a more robust boost response to the second vaccine dose (p = 0.004) as compared to the response to Pfizer–BioNTech. Ongoing studies with this cohort will continue to contribute to our understanding of the range and durability of responses to SARS-CoV-2 mRNA vaccines.

Comments

Author Posting © The Author(s), 2022. This article is posted here by permission of MDPI for personal use and redistribution. This article was published open access in Viruses, Vol. 14, Iss. 2 (February 10, 2022), https://doi.org/10.3390/v14020370.

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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