Single detection of human bocavirus 1 with a high viral load in severe respiratory tract infections in previously healthy children

Table 3 Comparison of demographic and clinical characteristics of patients hospitalized for HBoV1 single infection on the basis of viral loads

	HBoV1 load <10⁷group (N = 38)	HBoV1 load ≥10⁷group (N = 28)	P value
Gender (Male)	22 (57.9)	15 (53.6)	0.727
Age (months)	11 (1–151)	9.5 (1–33)	0.846
Duration of symptoms before admission (days)	7 (1–90)	9.5 (1–30)	0.974
Duration of hospitalization (days)	7 (3–28)	7 (3–33)	0.642
Pulse rate (/min)	125 (85–168)	124 (50–180)	0.507
Respiratory rate (/min)	41 (25–58)	45 (28–67)	0.144
White blood cell (×10⁹ cells/mL)	9.6 (4–23.2)	12.6 (6.4-23.3)	0.056
Fever	20 (52.6)	16 (57.1)	0.716
Cough	34 (89.5)	27 (96.4)	0.385
Dyspnea	9 (23.7)	12 (42.9)	0.036
Rhinorrhea	8 (21.1)	3 (10.7)	0.331
Diarrhea	12 (31.6)	9 (32.1)	0.961
Wheezing	12 (31.6)	17 (60.7)	0.018
Abnormality on chest radiograph^a	30 (100)	19 (95.0)	0.400
Severity	2 (5.3)	7 (25.0)	0.003
Upper respiratory tract infection	1 (2.6)	0 (0)	1.000
Lower respiratory tract infection
Pneumonia	28 (73.7)	18 (64.3)	0.437
Bronchiolitis	3 (7.9)	3 (10.7)	0.693
Bronchitis	1 (2.6)	3 (10.7)	0.304
Asthma	5 (13.2)	4 (14.3)	1.000

NOTE: Data presented as median (range) or frequency (percentage) of patients. ^a.There were 30 patients who had a chest radiograph test in the HBoV1 load <10⁷ group, and there were 20 patients in the HBoV1 load ≥10⁷group. Categorical variables were compared using the Chi-square test, and the continuous variables were compared using Student’s t-test or the nonparametric Mann–Whitney U-test.

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