Department of Nephrology;
B Propaideutiki Internal Medicine Clinic;
Attikon University Hospital;
Chaidari 12064;
Greece;
Intensive Care Unit;
Attikon University Hospital;
Chaidari 12064;
Greece;
D Internal Medicine Clinic;
Attikon University Hospital;
Chaidari 12064;
Greece;
Case report; Hemodialysis; Siblings; COVID-19; Host response; Immuneactivation; Immune-depression;