| Autor: |
Giulia Collatuzzo, Vittorio Lodi, Daniela Feola, Giuseppe De Palma, Emanuele Sansone, Emma Sala, Christian Janke, Noemi Castelletti, Stefano Porru, Gianluca Spiteri, Maria Grazia Lourdes Monaco, Francesca Larese Filon, Corrado Negro, Luca Cegolon, Jana Beresova, Eleonora Fabianova, Lucia A. Carrasco-Ribelles, Pere Toràn-Monserrat, Marta Maria Rodriguez-Suarez, Guillermo Fernandez-Tardon, Shuffield S. Asafo, Giorgia Ditano, Mahsa Abedini, Paolo Boffetta |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Viruses, Vol 14, Iss 12, p 2657 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
1999-4915 |
| DOI: |
10.3390/v14122657 |
| Popis: |
Background: The persistence of antibody levels after COVID-19 vaccination has public health relevance. We analyzed the determinants of quantitative serology at 9 months after vaccination in a multicenter cohort. Methods: We analyzed data on anti-SARS-CoV-2 spike antibody levels at 9 months from the first dose of vaccinated HCW from eight centers in Italy, Germany, Spain, Romania and Slovakia. Serological levels were log-transformed to account for the skewness of the distribution and normalized by dividing them by center-specific standard errors. We fitted center-specific multivariate regression models to estimate the cohort-specific relative risks (RR) of an increase of one standard deviation of log antibody level and the corresponding 95% confidence interval (CI), and combined them in random-effects meta-analyses. Finally, we conducted a trend analysis of 1 to 7 months’ serology within one cohort. Results: We included 20,216 HCW with up to two vaccine doses and showed that high antibody levels were associated with female sex (p = 0.01), age (RR = 0.87, 95% CI = 0.86–0.88 per 10-year increase), 10-day increase in time since last vaccine (RR = 0.97, 95% CI 0.97–0.98), previous infection (3.03, 95% CI = 2.92–3.13), two vaccine doses (RR = 1.22, 95% CI = 1.09–1.36), use of Spikevax (OR = 1.51, 95% CI = 1.39–1.64), Vaxzevria (OR = 0.57, 95% CI = 0.44–0.73) or heterologous vaccination (OR = 1.33, 95% CI = 1.12–1.57), compared to Comirnaty. The trend in the Bologna cohort, based on 3979 measurements, showed a decrease in mean standardized antibody level from 8.17 to 7.06 (1–7 months, p for trend 0.005). Conclusions: Our findings corroborate current knowledge on the determinants of COVID-19 vaccine-induced immunity and declining trend with time. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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