Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2023 Dec 20;14:1309997. doi: 10.3389/fimmu.2023.1309997

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2023 Akhtar, Islam, Khaton, Soltana, Jafrin, Rahman, Tauheed, Ahmed, Khan, Akter, Khan, Islam, Khanam, Biswas, Ahmmed, Ahmed, Rashid, Hossain, Alam, Alamgir, Rahman, Ryan, Harris, LaRocque, Flora, Chowdhury, Khan, Banu, Shirin, Bhuiyan and Qadri

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

PMC Copyright notice

IgG Antibody responses after two primary and two booster COVID-19 vaccination. RBD-specific IgG was analyzed in serum samples after four mRNA doses (A, C) and two primary Covishield and two booster mRNA doses (B, D) at different time intervals. Different doses of vaccine administration time points are indicated below the graphs. Samples were collected before vaccination (Pre-V), 1 month, 2/3 Months, 6 months, 12 months, 18 months, and 24 months after the first vaccination. Fold increase was calculated 1 month post-vaccination IgG conc. vs pre-vaccination IgG conc. for each dose as indicated in Figures (C, D). Each symbol represents one individual, and bars indicate geometric mean values. Symbols without any color represent participants who got infected before or after vaccination. Statistical analysis was performed between pre and post-vaccination using the Kruskal-Wallis test. ^*P <0.05, ^**P <0.01, ^***P <0.001, ns, not significant; P >0.05.