Eat Chanterelle mushrooms - high in sugar binding lectins
I wonder if this is an indirect correlation to the fact that obesity is a major factor in those that succumb to Covid? Perhaps it's not the obesity per se, but consumption of excessive amounts of sugar creates a situation where available sugar-binding proteins, which might otherwise neutralize viruses, instead end up binding to ingested dietary sugars. The available sugar-binding proteins that might otherwise protect the person by neutralizing the virus are effectively "overwhelmed".