Fig. 1From: How to boost the immune defence prior to respiratory virus infections with the special focus on coronavirus infectionsSchematic overview of how to boost the immune defence prior to respiratory virus infections with a healthy diet including baker’s yeast β‐glucan as a prophylactic option, with a healthy diet rich in natural vitamins (A, B, C, D, and E), minerals (Zn, Mn, Cu, Se), omega-3 fatty acids, polyphenols, and healthy microbiotaBack to article page