complement component C4d; creatinine; methylprednisolone; mycophenolate mofetil; steroid; tacrolimus; thymocyte antibody; vaxzevria; acute graft rejection; adult; adverse drug reaction; case report; clinical article; convalescence; coronavirus disease 2019; creatinine blood level; fever; human; human tissue; hypertensive nephropathy; immunosuppressive treatment; injection site pain; kidney allograft; kidney biopsy; Letter; male; medical history; reverse transcription polymerase chain reaction; side effect; vaccination