Sars-CoV-2 RNA was detected in the brains of all six autopsy patients who died more than a month after developing symptoms
+ many similar studies
Even mild SARS-CoV-2 respiratory-only infection can cause long-term neurologic damage
_{https://www.news-medical.net/news/20220116/Even-mild-SARS-CoV-2-respiratory-only-infection-can-cause-long-term-neurologic-damage.aspx}