Previous studies have shown that after acute Covid-19 infection some people can continue to suffer from cognitive symptoms such as difficulties in concentrating, colloquially referred to as brain fog, as well as forgetfulness and fatigue – features of the ‘long Covid’ syndrome.
But it was not known whether cognitive performance can also be affected in individuals who had mild symptoms and report no concerns after recovery from acute Covid infection.
In this study, participants were asked to complete a number of exercises to test their memory and cognitive ability, with a focus on cognitive functions critical for daily life, such as sustaining attention, memory, planning and semantic reasoning.