Fig. 2From: Epstein-Barr virus reactivation is not causative for post-COVID-19-syndrome in individuals with asymptomatic or mild SARS-CoV-2 disease courseFour hundred participants were included in our study with 351 answering the online surveys 3 and 9 months after the initial seropositive blood donation. For 163 individuals samples were available from the pre-pandemic period in 2019 due to the legal sample retention requirements of blood donations. These individuals were grouped according to the course of COVID-19 and putative PCS-symptoms into five subgroups as indicated. BD = blood donationBack to article page