>Genes that predispose you to immune inflammatory response,
>High inflammatory environment/diet (pollution, smoking, seed oils,).
>Severity of illness and of initial acute immune response.
>Age.
>Damage to pulmonary and cardiovascular systems, limiting oxygenated bloodflow tot he brain
>High anxiety/depression following diagnosis
>PTSD following intubation
What you're seeing is a combination of all those factors. Whether or not COVID-19 causes permanent brain damage remains to be seen.
