>Importantly, cognitive impairments are not limited to those with ongoing systemic symptoms; they are also evident in COVID-19 recovered individuals (COVID-RHC) who no longer report active symptoms, compared to healthy controls without SARS-CoV-2 infection (Non-COVID-HC) (Hampshire et al., 2021)

The finding was done in 2021, it's not clear to me if it's an issue years out or it's just a manifestation of post-viral syndrome. Also today there are unlikely to be any people who haven't been infected by sars-cov2