Nogle eksempler på disse alvorlige virusinfektioner er infektioner forårsaget af herpesvira (cytomegalovirus, varicella zoster virus og herpes simplex virus), JC virus (progressiv multifokal leukoencefalopati (PML)) og hepatitis C virus.
Examples of these serious viral infections are infections caused by the herpes viruses (Cytomegalovirus, Varicella Zoster Virus and Herpes Simplex Virus), JC virus (progressive multifocal leukoencephalopathy (PML)) and hepatitis C virus.