Roseola may be caused by Human herpes virus 6A, 6B and 7 (HHV6A, HHV6B and HHV 7). Other causes include enteroviruses (Coxsackie A and B, echoviruses), adenoviruses and parainfluenza viruses.  Roseola belongs to the Roseolovirus genus of the Betaherpesviridnae subfamily. HHV-6B causes exanthema subitum.
What are the reasons behind the occurrence of Roseola?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: What are the reasons behind the occurrence of Roseola? [/INST] \n Roseola may be caused by Human herpes virus 6A, 6B and 7 (HHV6A, HHV6B and HHV 7). Other causes include enteroviruses (Coxsackie A and B, echoviruses), adenoviruses and parainfluenza viruses.  Roseola belongs to the Roseolovirus genus of the Betaherpesviridnae subfamily. HHV-6B causes exanthema subitum.</s>