Hospital Outcomes in Patients Hospitalized for COVID-19 Pneumonia: The Effect of SARS-CoV-2 Vaccination and Vitamin D Status
Martyna Sanecka, Modar Youssef, Mohammad Abdulsalam, Syed F Raza, Abdul Qadeer, Julia Ioana, Alya Aldoresi, Syed I Shah, Abdul Al Lawati, Joseph Feely, William P Tormey, Eoghan O’neill, Liam J Cormican, Eoin P Judge, Daniel M A Mccartney, John L Faul
Nutrients, doi:10.3390/nu15132976
SARS-CoV-2 vaccination promises to improve outcomes for patients with COVID-19 pneumonia (most notably those with advanced age and at high risk for severe disease). Here, we examine serum 25-Hydroxyvitamin D (25(OH)D) status and outcomes in both old (>70 years) and young vaccinated (n = 80) and unvaccinated (n = 91) subjects, who were hospitalized due to COVID-19 pneumonia in a single center (Connolly Hospital Dublin). Outcomes included ICU admission and mortality. Serum 25(OH)D levels were categorized as D30 (<30 nmol/L), D40 (30-49.99 nmol/L) and D50 (≥50 nmol/L). In multivariate analyses, D30 was independently associated with ICU admission (OR: 6.87 (95% CI: 1.13-41.85) (p = 0.036)) and mortality (OR: 24.81 (95% CI: 1.57-392.1) (p = 0.023)) in unvaccinated patients, even after adjustment for major confounders including age, sex, obesity and pre-existing diabetes mellitus. While mortality was consistently higher in all categories of patients over 70 years of age, the highest observed mortality rate of 50%, seen in patients over 70 years with a low vitamin D state (D30), appeared to be almost completely corrected by either vaccination, or having a higher vitamin D state, i.e., mortality was 14% for vaccinated patients over 70 years with D30 and 16% for unvaccinated patients over 70 years with a 25(OH)D level greater than 30 nmol/L. We observe that high mortality from COVID-19 pneumonia occurs in older patients, especially those who are unvaccinated or have a low vitamin D state. Recent vaccination or having a high vitamin D status are both associated with reduced mortality, although these effects do not fully mitigate the mortality risk associated with advanced age.
Author Contributions: M.S., data processing, data analysis, data interpretation, manuscript drafts; J.L.F. and D.M.A.M., study design, data interpretation, manuscript drafts, data analysis; M.Y., M.A., S.F.R., A.Q., J.I., A.A., S.I.S., J.F., W.P.T., E.O., L.J.C., E.P.J. and A.A.L. data collection, processing, analysis and interpretation; J.L.F., study design, data collection, processing, analysis and interpretation, manuscript drafts. All authors have read and agreed to the published version of the manuscript. Funding: This research received no external funding.
Institutional Review Board Statement: The study was conducted in accordance with the Declaration of Helsinki, and approved by the Institutional Review Board (or Ethics Committee) of Connolly Hospital Dublin. Informed Consent Statement: Informed consent was obtained from all subjects involved in the study.
Conflicts of Interest: The authors declare no conflict of interest.
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