Table 3 Comparison of incidence of clinical characteristics between children with COVID-19, general population with COVID-19, children with SARS and children with H1N1 influenza

Age(y-old)

5.5(3.44–7.65)

51.97 (46.06–57.89)

12.2

5

Male

53.6% (49.4–57.7)

55.9% (51.6–60.1)

45.5%

54.7%

Asymptomatic

18.9% (12.1–26.6)

–

0

< 6.1%

Fever

52.7% (44.3–61.0)

88.7% (84.5–92.9)

100%

93.9%

Cough

41.9% (35.7–48.1)

57.6% (40.8–74.4)

63.6%

88.5%

Sore throat

5.0% (0.6–11.8)

11.0% (2.8–19.2)

13.6%

19.6%

Diarrhea

4.2% (1.8–7.3)

6.1% (2.4–9.7)

20.5%

6.1%

Tachypnea/Dyspnea

2.5% (1.6–4.8)

45.6% (10.9–80.4)

9.1%

–

Leucopenia

10.0% (4.5–16.7)

18.7% (8.5–28.8)

34.1%

16.9%

Lymphopenia

10.8% (3.9–19.7)

43.1% (18.9–67.3)

77.3%

34.5%

Ground-glass opacity

35.7% (31.0–40.5)

68.5% (51.8–85.2)

–

–

Comorbidities

3% (11/361)

36.8% (24.7–48.9)

11.4%

14.9%

ICU admission

0.1% (0.0–1.3)

20.3% (10.0–30.6%)

11.4%

19.6%

Death

0 (0.0–0.0)

13.9% (6.2–21.5)

0

2%

N

4300

2874

44

148