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Vitamin D study #5 of 69
5/9 Analysis of outcomes based on serum levels
D'avolio et al., Nutrients, 12:5, 1–7, doi:10.3390/nu12051359 (Peer Reviewed)
25-hydroxyvitamin D concentrations are lower in patients with positive PCR for SARS-CoV-2
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Retrospective 107 patients in Switzerland showing lower vitamin D levels (11.1 ng/mL) in PCR positive patients compared with negative patients (24.6 ng/mL), p = 0.004.

D'avolio et al., 5/9/2020, peer-reviewed, 8 authors.
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