Clear Association between Influenza and low Vitamin D
Clear Association between Peak Flu Incidence and Vitamin D Status GrassrootsHealth
Simplified Chart (by VitaminDWiki)

Original Chart by GrassrootsHealth

Search VitaminDWiki for Seasonality 737 hits as of Mafch 2020
Higher rates of TB in Winter and further from Equator – Nov 2012

COVID-19 treated by Vitamin D - studies, reports, videos
- {include}