Two years following the Covid-19 epidemic, diagnoses of brain fog, dementia and epilepsy are more common among people affected by the virus than those affected by other infections, according to a study from the University of Oxford. respiratory. To reach this conclusion, the study looked at a sample of 1.25 million people who had contracted the disease and observed whether they were prone to 14 identified brain disorders, before doing the same with a similar panel with a different respiratory infection.