Could it be that Covid sometimes makes people unaware of the seriousness of their medical condition (e.g., long Covid?).
It does seem to be the case for already existing neurological conditions.
"Reduced awareness of neuropsychological disorders (i.e., anosognosia) is a striking symptom of post-COVID-19 condition"
https://www.sciencedirect.com/science/article/pii/S2666354622001016