To answer this question I would like to share with you the article by Dr. med. Ernst Schrott (board member of the German Ayurveda Society). This article is about how we can strengthen our immune system from an Ayurvedic point of view in addition to the known corona protective measures. Incidentally, these recommendations generally apply to strengthening our immune system, but especially now during the corona pandemic. A well-written article and very helpful.
Wish you all a nice and healthy Advent season.