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
| 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) |
CFP Case Fatality Proportion