All 258 children had been tested for 16 respiratory viruses (10) Serodiagnostic findings for infection with parvovirus B19 (IgM positive or low epitope-type specificity index) (18, 20) were not observed among children with a serodiagnosis of HBoV infection. Among other children, 3 were IgM positive for parvovirus B19, of whom 1 was seronegative for HBoV and 2 were seropositive for HBoV.