A new study on HHV-6B shedding in saliva during and after exanthema subitum found that peak detection rates and viral loads occurred during the convalescent period, between 3 to 7 months post-illness. Detection rates were lower in adults than in children suggesting that siblings may be more likely to transmit the virus than parents.
A new study led by Soren Gantt, MD from the University of British Columbia and Lawrence Corey, MD of the University of Washington revealed risk factors for transmission and symptoms of primary human herpesvirus infections among Ugandan infants.
A group from University College London and the University of Zambia has reported that 20.5% of hospitalized infants were positive for HHV-6B, second only to CMV (24.3%). In contrast to previous studies, HHV-6A was found in only 0.3% of patients.
An international group of experts summarize the significant differences between the two viruses.