Table 5 Comparison between influenza A (H7N9) patients in Guangzhou and in the first epidemic wave in other places of China

Age^a

 <65 years

12

48

64

57.7

  ≥ 65 years

13

52

47

42.3

Underlying disease^a

21

84

68

61.3

ARDS^a

20

80

79

71.7

Time from illness onset to first medical care (days)^#

1

0–4

1

0–3

Time from illness onset to hospitalization (days)^#

4

1–7

4

3–6

Time from illness onset to oseltamivir treatment (days)^#

5

3–7

6

5–9

Time from illness onset to development of ARDS (days)^#

7

6–8

7

5–9