Definition of Human herpesvirus 7

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Human herpesvirus 7: A herpes virus that causes seizures and other central nervous system symptoms in children. Abbreviated HHV-7. Closely related to HHV-6, HHV-7 has also been linked to roseola. Diagnosis is made via rapid blood culture or other blood test. Treatment is experimental at this time, but antiviral drugs or beta interferon may be tried.