Abstract
Purpose
Given that vitamin D (25(OH)D) contributes to immune defense, we sought to determine if deficiency of 25(OH)D was significantly associated with methicillin-resistant Staphylococcus aureus (MRSA) infection.
Methods
All patients with 25(OH)D determinations at the Atlanta VAMC from 2007 to 2010 were included in the analyses. These patients were cross-referenced with a prospectively collected MRSA infection database at the AVAMC (2006–2010). Patients with one or more MRSA infections during the study period were considered MRSA-infected patients. Multivariate logistic regression was used to determine the association between 25(OH)D status [deficient (<20 ng/mL) vs. non-deficient (≥20 ng/mL)] and MRSA infection.
Results
A total of 6405 patients with 25(OH)D determinations were included in the analyses, of which 401 (6.3 %) were MRSA-infected patients. Mean (SD) vitamin D levels, in ng/mL, were 21.1 (12.4) and 24.0 (12.6) for MRSA-infected patients and non-MRSA infected patients, respectively (p < 0.0001). The multivariate logistic regression model confirmed associations between MRSA infection and sex, race, BMI, HIV status, and 25(OH)D [odds ratio for 25(OH)D: 1.94; 95 % confidence interval: 1.51–2.49].
Conclusion
MRSA-infected patients had significantly lower serum vitamin D levels than non-MRSA infected patients, even when controlling for potential confounding variables.
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This study has been approved by Emory University’s IRB and the Atlanta VA Medical Center Research and Development Committee. The study did not require patients’ written consent as it has an IRB-approved HIPAA waiver.
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Thomason, J., Rentsch, C., Stenehjem, E.A. et al. Association between vitamin D deficiency and methicillin-resistant Staphylococcus aureus infection. Infection 43, 715–722 (2015). https://doi.org/10.1007/s15010-015-0815-5
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DOI: https://doi.org/10.1007/s15010-015-0815-5