Human Herpesvirus 6 (HHV-6) Antibodies Blood Test, IgG
Human herpesvirus 6 (HHV-6) has recently been identified as the agent associated with both pediatric and adult infections. Most children have been infected by age three. The acute infection in children is characterized clinically by an acute febrile illness, irritability, inflammation of tympanic membranes, and (uncommonly) a rash characteristic of roseola.
In adults, HHV-6 has been associated with chronic fatigue and spontaneously resolving fever resembling a mononucleosis-like illness. During the acute episode an elevated IgM HHV-6 is useful. An increase in IgG HHV-6 between acute and convalescent serum sample is consistent with a recent HHV-6 infection.
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