> Immunity also depends on viral load It also appears to depend on what blood types the infected and not-yet-infected people have[0] Which intrigues me greatl

> Immunity also depends on viral load It also appears to depend on what blood types the infected and not-yet-infected people have[0] Which intrigues me greatly, because no-one in my immediate family knows their blood type. Our middle child had Covid in March (infected at his school) and promptly gave it to my wife. He spent 10 days at home as he kept testing positive, she spent almost as long. Despite the rest of us taking no precautions whatsoever within our home, the other three of us were not infected. Then our eldest child had Covid in May (over half his school class were positive around that time), and he promptly gave it to me. The (ex-)scientist in me would now like to have our blood types checked! [0] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8286549/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8286549/