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Vaccines (Basel). 2021 Jun 22;9(7). doi: 10.3390/vaccines9070685.

Early Onset of SARS-COV-2 Antibodies after First Dose of BNT162b2: Correlation with Age, Gender and BMI.

Vaccines

Raul Pellini, Aldo Venuti, Fulvia Pimpinelli, Elva Abril, Giovanni Blandino, Flaminia Campo, Laura Conti, Armando De Virgilio, Federico De Marco, Enea Gino Di Domenico, Ornella Di Bella, Simona Di Martino, Fabrizio Ensoli, Diana Giannarelli, Chiara Mandoj, Valentina Manciocco, Paolo Marchesi, Francesco Mazzola, Silvia Moretto, Gerardo Petruzzi, Fabrizio Petrone, Barbara Pichi, Martina Pontone, Jacopo Zocchi, Antonello Vidiri, Branka Vujovic, Giulia Piaggio, Aldo Morrone, Gennaro Ciliberto

Affiliations

  1. Department Otolaryngology Head and Neck Surgery, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), 00144 Rome, Italy.
  2. HPV Unit, UOSD Tumor Immunology and Immunotherapy, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), 00144 Rome, Italy.
  3. Department of Microbiology and Virology, IRCCS San Gallicano Dermatological Institute, Istituti Fisioterapici Ospitalieri (IFO), 00144 Rome, Italy.
  4. Oncogenomic and Epigenetic Unit, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), 00144 Rome, Italy.
  5. Department Clinical Pathology and Cancer Biobank, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), 00144 Rome, Italy.
  6. Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, 20089 Milan, Italy.
  7. Department of RiDAIT, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), 00144 Rome, Italy.
  8. Istituti Fisioterapici Ospitalieri (IFO), 00144 Rome, Italy.
  9. Department of Pathology, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), 00144 Rome, Italy.
  10. Biostatistical Unit, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), 00144 Rome, Italy.
  11. U.O.C. D.I.T.R.A.R. IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), 00144 Rome, Italy.
  12. Department of Radiology and Diagnostic Imaging, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), 00144 Rome, Italy.
  13. UOSD SAFU, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), 00144 Rome, Italy.
  14. Scientific Direction, IRCCS San Gallicano Dermatological Institute, Istituti Fisioterapici Ospitalieri (IFO), 00144 Rome, Italy.
  15. Scientific Direction, IRCCS Regina Elena National Cancer Institute, Istituti Fisioterapici Ospitalieri (IFO), 00144 Rome, Italy.

PMID: 34206312 PMCID: PMC8310011 DOI: 10.3390/vaccines9070685

Abstract

BACKGROUND: The first goal of the study was to analyse the antibody titre 21 days after the first dose of the BNT162b2 vaccine in a group of 252 healthcare workers (HCW). The second goal was to analyse how the antibody titre changes in correlation with age, gender and body mass index (BMI).

METHODS: Participants had a nasopharyngeal swab for SARS-CoV-2 and were assessed for the presence of SARS-CoV-2 antibodies at baseline and 21 days after the BNT162b2 priming dose.

RESULTS: First dose of BNT162b2 activated immune responses in 98% of the participants. Five HWC had no increase in antibody titre 21 days after the first dose. Antibody titre was greater in young (<38 years) vs. older participants (<38 vs. 47-56

CONCLUSIONS: Our study demonstrates that a single dose of BNT162b2 activates the immune response, and being young and normal-weight correlate positively with this response. Larger specifically designed clinical trials are needed to validate these results.

Keywords: COVID-19; SARS-CoV-2; antibodies; obesity; serum titer; vaccine

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