Dr. John Faul:

I thank Senator Black for her question. We measured a lot of nutritional elements in the initial SARS outbreak. At that time we had no idea what was going on with Covid-19, who was susceptible and who was not. We measured iron in great detail, including ferritin, which is an acute-phase reactant related to iron transfer and iron saturation. In people who were very sick with Covid, iron deficiency was not a significant factor whereas vitamin D was very much an eyebrow raising factor. We have measured it in detail.