This page has moved. Click here to view. It is probably latent in salivary glands and blood. Virus may infect infants through the saliva mainly from mother to child.
Most cases are asymptomatic or present with fever of unknown origin and occur without a rash.
The disease is sporadic, and the majority of cases occur between the ages of 6 months and 4 years. HHV-6 antibody is Incubation period. The incubation period of roseola infantum is 12 days, with a range of 5 to 15 days. There is a sudden onset of high fever of 103 to 106 F with few or minor symptoms. Most children appear inappropriately well for the degree of temperature elevation, but they may experience slight anorexia or one or two episodes of vomiting, running nose, cough, and hepatomegaly.