Covid: Best Foods and Vitamins That May HelpBoost Your Immune System with Vitamin C, Vitamin D and Zinc. It may help. Choose foods rich in these vitamins.Tips by Doc Willie Ong (Internist and Cardiologist) #75 coviddocFOODSimmune systemIMMUNITYvideoVITAMINvitamin immune systemVITAMINSvlogWillieYouTube