0
0.5
1
1.5
2+
Case
8%
Improvement
Relative Risk
Vitamin D Blanch-Rubió et al. Prophylaxis
Does vitamin D reduce COVID-19 infections?
Retrospective 2,102 patients in Spain
No significant difference in cases
c19early.org
Blanch-Rubió et al., Aging, October 2020
Favors vitamin D
Favors control