<prompt> HHV-6B causes ?Carcinoma cervixCarcinoma endometriumClear cell carcinomaFocal encephalitis  <response>: Ans is d i.e., Focal encephalitis . HHV-6 has two variants -- A and B. . HHV- 6 B causes i In children -- Exanthem subitumroseola infantum or sixth disease ii In older age groups -4 Infectious mononucleosis, focal encephalitis iii In immunodeficient --- Pneumonia, Disseminated disease 