I have heard of two patients in london who were immuno compromised and recovered quicker than a "normal" person. The real damage occurs when the immune system

I have heard of two patients in london who were immuno compromised and recovered quicker than a "normal" person. The real damage occurs when the immune system ramps up to attack the virus, but ends up attacking the cells they are living in as well. Now, most of the time this is fine an normal, but it can also trigger https://en.wikipedia.org/wiki/Cytokine_release_syndrome https://en.wikipedia.org/wiki/Cytokine_release_syndrome which is a nasty feedback loop. There are experiments to give immuno-suppressants at key times to try and limit the damage. But its tricky and dangerous.