inclusion criteria: * previous diagnosis of sars-cov-2 infection confirmed through detection of virus rna by polymerase chain reaction (pcr) testing of a nasopharyngeal swab; * subsequent recovery from infection as defined by two consecutive negative pcr tests separated by at least a day; * mild form of covid-19 (symptoms may include fever, cough, sore throat, malaise, myalgia, anorexia, nausea, diarrhoea, anosmia and ageusia) without necessitating hospital admission; * complaints of cognitive difficulties and/or sense of fatigue, persisting after sars-cov-2 infection.

inclusion criteria: * previous diagnosis of sars-cov-2 infection confirmed through detection of virus rna by polymerase chain reaction (pcr) testing of a nasopharyngeal swab; * subsequent recovery from infection as defined by two consecutive negative pcr tests separated by at least a day; * mild form of covid-19 (symptoms may include fever, cough, sore throat, malaise, myalgia, anorexia, nausea, diarrhoea, anosmia and ageusia) without necessitating hospital admission; * complaints of cognitive difficulties and/or sense of fatigue, persisting after sars-cov-2 infection.

inclusion criteria: previous diagnosis of sars-cov-2 infection confirmed through detection of virus rna by polymerase chain reaction (pcr) testing of a nasopharyngeal swab; subsequent recovery from infection as defined by two consecutive negative pcr tests separated by at least a day; mild form of covid-19 (symptoms may include fever, cough, sore throat, malaise, myalgia, anorexia, nausea, diarrhoea, anosmia and ageusia) without necessitating hospital admission; complaints of cognitive difficulties and/or sense of fatigue, persisting after sars-cov-2 infection.

inclusion criteria: previous diagnosis of sars-cov-2 infection confirmed through detection of virus rna by polymerase chain reaction (pcr) testing of a nasopharyngeal swab; subsequent recovery from infection as defined by two consecutive negative pcr tests separated by at least a day; mild form of covid-19 (symptoms may include fever, cough, sore throat, malaise, myalgia, anorexia, nausea, diarrhoea, anosmia and ageusia) without necessitating hospital admission; complaints of cognitive difficulties and/or sense of fatigue, persisting after sars-cov-2 infection.