Skip to main content

Table 1 Gender and Age Comparison of Influenza A(H7N9) Case-Patients and Deaths in Mainland China During the First (March 31-September 30, 2013), Second (October 1, 2013 – September 30, 2014) and Third (October 1, 2014 – September 30, 2015) Waves of Circulation

From: Comparison of the first three waves of avian influenza A(H7N9) virus circulation in the mainland of the People’s Republic of China

Age (Years) Total Wave 1 Wave 2 Wave 3
N (%) Death (CFP%) N (%) Death (CFP%) N (%) Death (CFP%) N (%) Death(CFR%)
0–14 42(6.4) 1(2.4) 6(4.5) 0(0) 19(6.2) 0(0) 17 (7.8) 1 (5.9)
15–29 35(5.3) 11(31.4) 6(4.5) 1(16.7) 19(6.2) 7(36.8) 10 (4.6) 3 (30.0)
30–44 106(16.1) 26(24.5) 20(14.9) 3(15.0) 58(19.0) 14(24.1) 28 (12.8) 9 (32.1)
45–59 193(29.3) 75(38.9) 31(23.1) 7(22.6) 81(26.5) 31(38.3) 81 (37.0) 37 (45.7)
60–74 182(27.6) 96(52.7) 46(34.3) 19(41.3) 81(26.5) 47(58.0) 55 (25.1) 30 (54.5)
75–89 100(15.2) 60(60) 24(17.9) 13(54.2) 48(15.7) 29(60.4) 28 (12.8) 18 (64.3)
≥90 1(0.2) 1(100) 1(0.8) 1(100) 0(0) - 0 (0)  
Total 659 270 (41.0) 134 44(32.8) 306 128(41.8) 219 98 (44.7)
Age median (range) 57 (9 months-91) 62 (13–91) 61 (2–91) 66.5 (27–91) 56 (1–88) 63 (20–86) 56 (9 months-88) 59 (13–83)
  1. CFP Case Fatality Proportion