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Syrimi N, Sourri F, Giannakopoulou MC, Karamanis D, Pantousas A, Georgota P, Rokka E, Vladeni Z, Tsiantoula E, Soukara E, Lavda N, Gkaragkanis D, Zisaki A, Vakalidis P, Goula V, Loupou E, Palaiodimos L, Hatzigeorgiou D. Humoral and Cellular Response and Associated Variables Nine Months following BNT162b2 Vaccination in Healthcare Workers. J Clin Med 2023; 12:jcm12093172. [PMID: 37176612 PMCID: PMC10179201 DOI: 10.3390/jcm12093172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/21/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023] Open
Abstract
In this study, we aimed to illustrate the trajectory of humoral and cellular immunity nine months after primary vaccination with the BNT162b2 mRNA vaccine among 189 healthcare workers (HCWs). Additionally, we endeavored to identify correlations between immunity parameters and a number of common variables and comorbidities. A total of 189 healthcare workers (HCWs), vaccinated against COVID-19, were finally included in the study. All of the subjects had received two doses of the BNT162b2 vaccine; had undergone antibody tests one, four and nine months post-vaccination; and had completed a medical questionnaire. Further samples taken at nine months were tested for cellular immunity. No participants had evidence of COVID-19 infection pre- or post-vaccination. An anti-S1 receptor binding domain (RBD) antibody assay was used to assess humoral response, and cellular immunity was estimated with an INF-γ release assay (IGRA). Statistical analysis was performed using STATA. We report a statistically significant antibody drop over time. Being above the age of 40 or a smoker reduces the rise of antibodies by 37% and 28%, respectively. More than half of the participants did not demonstrate T-cell activation at nine months. Female gender and antibody levels at four months predispose detection of cellular immunity at nine months post-immunization. This study furthers the qualitative, quantitative, and temporal understanding of the immune response to the BNT162b2 mRNA vaccine and the effect of correlated factors.
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Affiliation(s)
- Natalia Syrimi
- Paediatric Department, 251 Hellenic Air Force General Hospital, P. Kanellopoulou Avenue, 11525 Athens, Greece
- Infection Prevention and Control Department, 251 Hellenic Air Force General Hospital, P. Kanellopoulou Avenue, 11525 Athens, Greece
| | - Flora Sourri
- Infection Prevention and Control Department, 251 Hellenic Air Force General Hospital, P. Kanellopoulou Avenue, 11525 Athens, Greece
| | - Maria-Christina Giannakopoulou
- COVID-19 Ward, 251 Hellenic Air Force General Hospital, P. Kanellopoulou Avenue, 11525 Athens, Greece
- Medical Directorate, Hellenic National and Defence General Staff, Mesogeion 227-231, 15561 Athens, Greece
| | - Dimitrios Karamanis
- Department of Health Informatics, Rutgers School of Health Professions, 65 Bergen St., Newark, NJ 07107, USA
- Department of Economics, University of Piraeus, Karaoli and Dimitriou 80, 18534 Piraeus, Greece
| | - Asterios Pantousas
- Department of Electrical and Computer Engineering, Democritus University of Thrace, 69100 Komotini, Greece
| | - Persefoni Georgota
- Immunology Laboratory, 251 Hellenic Air Force General Hospital, P. Kanellopoulou Avenue, 11525 Athens, Greece
| | - Eleni Rokka
- Oncology Ward, 251 Hellenic Air Force General Hospital, P. Kanellopoulou Avenue, 11525 Athens, Greece
| | - Zoe Vladeni
- Infection Prevention and Control Department, 251 Hellenic Air Force General Hospital, P. Kanellopoulou Avenue, 11525 Athens, Greece
| | - Euaggelia Tsiantoula
- Biochemistry Laboratory, 251 Hellenic Air Force General Hospital, P. Kanellopoulou Avenue, 11525 Athens, Greece
| | - Evangelia Soukara
- COVID-19 Ward, 251 Hellenic Air Force General Hospital, P. Kanellopoulou Avenue, 11525 Athens, Greece
| | - Nikoletta Lavda
- COVID-19 Ward, 251 Hellenic Air Force General Hospital, P. Kanellopoulou Avenue, 11525 Athens, Greece
| | - Dimitrios Gkaragkanis
- COVID-19 Ward, 251 Hellenic Air Force General Hospital, P. Kanellopoulou Avenue, 11525 Athens, Greece
| | - Aikaterini Zisaki
- Infection Prevention and Control Department, 251 Hellenic Air Force General Hospital, P. Kanellopoulou Avenue, 11525 Athens, Greece
| | - Panagiotis Vakalidis
- Biochemistry Laboratory, 251 Hellenic Air Force General Hospital, P. Kanellopoulou Avenue, 11525 Athens, Greece
| | - Vasiliki Goula
- Biochemistry Laboratory, 251 Hellenic Air Force General Hospital, P. Kanellopoulou Avenue, 11525 Athens, Greece
| | - Evdokia Loupou
- Biochemistry Laboratory, 251 Hellenic Air Force General Hospital, P. Kanellopoulou Avenue, 11525 Athens, Greece
| | - Leonidas Palaiodimos
- Department of Medicine, Jacobi Medical Center, Albert Einstein College of Medicine, New York, NY 10461, USA
| | - Dimitrios Hatzigeorgiou
- Medical Directorate, Hellenic National and Defence General Staff, Mesogeion 227-231, 15561 Athens, Greece
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Kritikou G, Avgerinos KI, Koutserimpas C, Sourri F, Hatzigeorgiou D, Kottaridi C, Bountouris I. Effectiveness of a preventive bundle of measures for reducing surgical site infections in patients undergoing elective orthopedic procedures in a Hellenic Air Force Hospital. G Chir 2019; 40:120-126. [PMID: 31131811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
BACKGROUND Bundles of preventive measures may improve patient outcomes. The aim of this study is to investigate if a surgical site infections (SSIs) preventive bundle in orthopedic surgery patients can result in reduction of such infections, hospitalization length and cost. METHODS The present is a retrospective cohort study. A total of 1299 patients was admitted to hospital for an elective orthopedic procedure during 2012-2015. The patients were subjected to either an integrated three-stage SSIs preventive protocol or standard preventive measures. The two groups were compared for incidence of SSIs, median hospitalization length and median cost. RESULTS The incidence of SSIs was lower in the new-protocol group, when compared to the old protocol one (p=0.102). Median (md) hospitalization length was significantly lower in the new protocol group (md = 2) compared to "old-protocol" group (md= 5) [U = 280520, p<0.001]. Regarding arthroscopies, the median cost in the new protocol patients (md= 1500) was significantly lower compared to "old-protocol" patients (md= 1585) [(U= 112660), p < 0.001]. Knee arthroplasties' median costs did not differ (both mds= 4400, U = 2002, p > 0.05). For hip arthroplasties, the new protocol's patient median cost (md= 3000) was significantly lower than that of "old-protocol" (md = 4000) [U = 19680, p < 0.001]. CONCLUSIONS The use of a bundle of measures for the prevention of SSIs in a hospital's orthopedic operations proved effective, since it resulted in substantial decrease of SSIs, statistically significant decreased hospitalization length, as well as cost.
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