Well this is alarming: Cognitive deficits in people who have recovered from #COVID19 relative to controls: An N=84,285 online study | medRxiv
https://www.medrxiv.org/content/10.1101/2020.10.20.20215863v1
"Individuals who recovered from suspected or confirmed COVID-19 perform worse on cognitive tests in multiple domains than would be expected given their age and demographic profiles."