A small child presents with a low-grade fever, coryza, sore throat, a bright red rash on his cheeks, and a less intense erythematous rash on his body. Elevated IgG and IgM antibody titers to parvovirus suggest a diagnosis of which of the following?
Acute Lyme disease Fifth disease Possible hepatitis B infection Possible subacute sclerosing panencephalitis (SSPE)