Jump to Main Content
- Daisuke Nonaka, et al. Show all 7 Authors
- Clinical nutrition 2017 v.36 no.5 pp. 1288-1293
- blood serum; business enterprises; case-control studies; confidence interval; human resources; influenza; odds ratio; protein binding; questionnaires; regression analysis; risk; vaccination; vitamin D; winter; Japan
- ... Several intervention studies have examined the effect of vitamin D supplementation on influenza or influenza-like illness, but their results have been inconsistent. We prospectively examined the association of serum 25-hydroxyvitamin D with influenza among Japanese workers. We conducted a nested case-control study in a cohort of workers in 4 companies in the Kanto and Tokai areas of Japan. Physici ...