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Ciniselli CM, Lecchi M, Figini M, Melani CC, Daidone MG, Morelli D, Zito E, Apolone G, Verderio P. COVID-19 Vaccination in Health Care Workers in Italy: A Literature Review and a Report from a Comprehensive Cancer Center. Vaccines (Basel) 2022; 10:vaccines10050734. [PMID: 35632490 PMCID: PMC9146113 DOI: 10.3390/vaccines10050734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/28/2022] [Accepted: 05/05/2022] [Indexed: 02/04/2023] Open
Abstract
The coronavirus disease 2019 pandemic still represents a global public health emergency, despite the availability of different types of vaccines that reduced the number of severe cases, the hospitalization rate and mortality. The Italian Vaccine Distribution Plan identified healthcare workers (HCWs) as the top-priority category to receive access to a vaccine and different studies on HCWs have been implemented to clarify the duration and kinetics of antibody response. The aim of this paper is to perform a literature review across a total of 44 studies of the serologic response to COVID-19 vaccines in HCWs in Italy and to report the results obtained in a prospective longitudinal study implemented at the Fondazione IRCCS Istituto Nazionale Tumori (INT) of Milan on 1565 HCWs. At INT we found that 99.81% of the HCWs developed an antibody response one month after the second dose. About six months after the first serology evaluation, 100% of the HCWs were still positive to the antibody, although we observed a significant decrease in its levels. Overall, our literature review results highlight a robust antibody response in most of the HCWs after the second vaccination dose. These figures are also confirmed in our institutional setting seven months after the completion of the cycle of second doses of vaccination.
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Affiliation(s)
- Chiara Maura Ciniselli
- Bioinformatics and Biostatistics Unit, Department of Applied Research and Technological Development, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (C.M.C.); (M.L.)
| | - Mara Lecchi
- Bioinformatics and Biostatistics Unit, Department of Applied Research and Technological Development, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (C.M.C.); (M.L.)
| | - Mariangela Figini
- Biomarker Unit, Department of Applied Research and Technological Development, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy;
| | - Cecilia C. Melani
- Scientific Directorate, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (C.C.M.); (M.G.D.); (G.A.)
| | - Maria Grazia Daidone
- Scientific Directorate, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (C.C.M.); (M.G.D.); (G.A.)
| | - Daniele Morelli
- Laboratory Medicine, Department of Pathology, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy;
| | - Emanuela Zito
- ICT, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy;
| | - Giovanni Apolone
- Scientific Directorate, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (C.C.M.); (M.G.D.); (G.A.)
| | - Paolo Verderio
- Bioinformatics and Biostatistics Unit, Department of Applied Research and Technological Development, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (C.M.C.); (M.L.)
- Correspondence:
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