👉🏻 https://www.nature.com/articles/s41598-022-24053-4#Sec17
- Vitamin D supplementation during the pandemic was associated with a significant 20% and 28% reduction in laboratory-confirmed COVID-19 rates for vitamin D3 and vitamin D2, respectively.
- Vitamin D3 was associated with a significant 33% decrease in mortality within 30-days of COVID-19 infection.
Whatever this is, it was/is different than the flu. It differs from the flu in notable ways.