Clinical data were compared among children infected only with HBoV (n = 12), rhinovirus (n = 56), RSV (n = 36), and HBoV and any other virus (n = 34) (Table  3) Table 1 and text). †Five infants had maternal antibodies (defined as waning immunoglobulin G absorbance values in paired serum samples). Two other infants became seronegative and were considered virus negative.