Table 3 Cases and controls by age group, sex, month of swab collection, year and type/subtype, 2007-2008
2007 | 2008 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Controls | Influenza cases (%) | Controls | Influenza cases (%) | |||||||
(%) | All | A/H1 | A/H3 | B | (%) | All | A/H1 | A/H3 | B | |
Age group (years) | ||||||||||
0-4 | 7 (4) | 7 (4) | 3 (7) | 4 (3) | 0 | 4 (2) | 5 (5) | 0 | 1 (3) | 3 (5) |
5-19 | 22 (11) | 42 (22) | 12 (27) | 24 (21) | 6 (23) | 37 (17) | 28 (27) | 0 | 6 (16) | 22 (37) |
20-49 | 126 (66) | 113 (58) | 25 (56) | 68 (58) | 17 (65) | 140 (63) | 57 (54) | 3 (75) | 18 (47) | 33 (56) |
50-64 | 28 (15) | 22 (11) | 4 (9) | 14 (12) | 2 (8) | 30 (13) | 11 (10) | 1 (25) | 9 (24) | 1 (2) |
≥ 65 | 9 (5) | 10 (5) | 1 (2) | 7 (6) | 1 (4) | 13 (6) | 4 (4) | 0 | 4 (11) | 0 |
Sex | ||||||||||
Female | 89 (46) | 96 (49) | 20 (44) | 62 (53) | 12 (46) | 105 (47) | 55 (52) | 1 (25) | 19 (50) | 34 (57) |
Male | 103 (54) | 98 (51) | 25 (56) | 55 (47) | 14 (54) | 119 (53) | 51 (48) | 3 (75) | 19 (50) | 26 (43) |
Month of swab collection | ||||||||||
March | 2 (1) | 2 (1) | 0 | 1 (< 1) | 1 (4) | 0 | 0 | 0 | 0 | 0 |
April | 5 (3) | 1 (< 1) | 0 | 1 (< 1) | 0 | 6 (3) | 0 | 0 | 0 | 0 |
May | 14 (7) | 1 (< 1) | 1 (2) | 0 | 0 | 28 (13) | 3 (3) | 0 | 0 | 3 (5) |
June | 13 (7) | 4 (2) | 1 (2) | 3 (3) | 0 | 33 (15) | 3 (3) | 0 | 0 | 3 (5) |
July | 48 (25) | 50 (26) | 10 (22) | 31 (27) | 7 (27) | 32 (14) | 9 (8) | 0 | 3 (8) | 5 (8) |
August | 66 (34) | 94 (48) | 30 (67) | 56 (48) | 4 (15) | 69 (31) | 42 (40) | 4 (100) | 17 (45) | 21 (35) |
September | 37 (19) | 30 (15) | 3 (7) | 23 (20) | 4 (15) | 42 (19) | 43 (41) | 0 | 14 (37) | 27 (45) |
October | 7 (4) | 12 (6) | 0 | 2 (2) | 10 (38) | 13 (6) | 6 (6) | 0 | 4 (11) | 1 (2) |
November | 0 | 0 | 0 | 0 | 0 | 1 (< 1) | 0 | 0 | 0 | 0 |
Total | 192 | 194 | 45 | 117 | 26 | 224 | 106a | 4 | 38 | 60a |