Other studies have suggested that reactivation of these viruses could theoretically contribute to a hyperinflammatory state or autoimmune disorders in acute COVID-19, but this study does not provide evidence of that.
The presence of HHV-6 DNA in nasal swabs correlates with neurological symptoms in patients with severe COVID-19
40% of the patients with HHV-6 DNA had CNS symptoms, compared to 14.3% of the HHV-6 negative patients.
Reactivation of herpesviruses demonstrated in severely ill patients with acute COVID-19
EBV, CMV, and HHV-6 reactivation were found in a small cohort of severe COVID-19 patients
Does HHV-6B reactivate in COVID-19 patients?
So far only one case report has documented HHV-6B reactivation in COVID-19, but the rise in Kawasaki-like symptoms and pityriasis rosea has at least one dermatology group suspicious of HHV-6/7 reactivation.