Distribution of viral genomes in endomyocardial biopsies of 756 consecutive patients clinically suspected of inflammatory cardiomyopathy or acute myocarditis. (A) Pie chart representing the proportions of cardiotropic virus-genomes. (B) Pie chart representing the occurrence of myocardial inflammation among 79 HHV6 DNA-positive patients, excluding ciHHV6. Percentages and absolute numbers were calculated based on endomyocardial biopsy findings from patients admitted to the cardiology department of Charité-Campus Virchow Clinics, at the time between January 2015 and December 2020. HHV6, human herpesvirus 6; B19V, parvovirus B19V; CVB3, coxsackievirus B3; EBV, Epstein Barr virus; HHV7, human herpesvirus 7; HCV, hepatitis C virus; CMV, cytomegalovirus; ciHHV6, chromosomally integrated HHV6.