DIFFERENCES IN IFN-GAMMA AND SARS-COV-2 SPECIFIC IgG LEVEL IN mRNA BNT162B2 (PFIZER-BIONTECH) VACCINATED NAIVE AND COVID-19 RECOVERED INDIVIDUALS FROM ZAKHO DISTRICT, DUHOK, IRAQ

  • DILMAN IMAD MOHAMMED Dept. of Medical Laboratory Sciences, College of Health Sciences, University of Duhok, Kurdistan Region-Iraq
  • AZAD AHMED SULAIMAN Dept. of Pathology and Microbiology, College of Veterinary Medicine, University of Duhok, Kurdistan Region-Iraq
Keywords: Covid-19, Anti-SARS-Cov-2 IgG, IFN-γ, BNT162B2 Vaccine, Naive, Recovered

Abstract

COVID-19 has caused massive public health threats worldwide, leading to the development of effective vaccines to control the epidemic. Real-world evidence confirms the efficacy of vaccinations against the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). This study aimed to evaluate and compare the titer of anti-SARS-CoV-2 IgG antibodies against the S1 subunit of the virus’s spike protein as a marker of the humoral response and the concentration of interferon-gamma as an indicator of cellular response in naive and recovered individuals. The study included 176 individuals, 88 (50%) were naïve, and 88 (50%) had a previous history of exposure to SARS-CoV-2 with or without symptoms.  The serum concentration of IgG and IFN-γ were measured two weeks after the second dose of the BNT162B2 mRNA vaccine in naive and recovered individuals using enzyme-linked immunosorbent assays.  The concentration of anti-SARS-CoV-IgG and IFN-γ was significantly higher in recovered participants compared to naive. Moreover, the concentration of anti-SARS-CoV-IgG and IFN-γ was significantly associated with severe cases. Our results suggested that the second dose of the BNT162b2 mRNA vaccine provides a protective humoral and cellular immune response to almost all individuals. While inducing a more robust immune response in recovered individuals, indicates that a single dose of the vaccine may be sufficient for symptomatic recovered individuals

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Published
2023-10-12
How to Cite
MOHAMMED, D. I., & SULAIMAN, A. A. (2023). DIFFERENCES IN IFN-GAMMA AND SARS-COV-2 SPECIFIC IgG LEVEL IN mRNA BNT162B2 (PFIZER-BIONTECH) VACCINATED NAIVE AND COVID-19 RECOVERED INDIVIDUALS FROM ZAKHO DISTRICT, DUHOK, IRAQ. Journal of Duhok University, 26(2), 289-301. https://doi.org/10.26682/sjuod.2023.26.2.25
Section
Pure and Engineering Sciences