Facebook post by University of Helsinki

The common gene variant APOE4, which predisposes carriers to Alzheimer's, may also increase cerebral microhaemorrhages related to COVID-19 and associate with mental fatigue related to long COVID.
A common Alzheimer’s risk factor may predispose people to severe COVID-19 | University of Helsinki l.facebook.com

A study conducted at the University of Helsinki and the Helsinki University Hospital suggests that the APOE4 allele may also increase cerebral microhaemorrhages related to COVID-19 and associate with mental fatigue related to long COVID.