Category | n (%) | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
St. Petersburg | Moscow | Czech Republic | Turkey | France | Beijing | Valencia | Mexico | India | Fortaleza | Curitiba | Total | |
N = 2247 | N = 2457 | N = 248 | N = 1351 | N = 169 | N = 2947 | N = 6795 | N = 1034 | N = 371 | N = 157 | N = 584 | N = 18,360 | |
Excluded from the analysis | ||||||||||||
Non-resident | 10 (0.4) | 84 (3.4) | 1 (0.4) | 10 (0.7) | 0 (0.0) | 1 (< 0.1) | 25 (0.4) | 249 (24.1) | 5 (1.3) | 3 (1.9) | 0 (0.0) | 388 (2.1) |
Institutionalized | 0 (0.0) | 32 (1.3) | 6 (2.4) | 25 (1.9) | 0 (0.0) | 2 (0.1) | 0 (0.0) | 5 (0.5) | 0 (0.0) | 1 (0.6) | 3 (0.5) | 74 (0.4) |
Unable to communicate | 20 (0.9) | 112 (4.6) | 14 (5.6) | 96 (7.1) | 0 (0.0) | 0 (0.0) | 59 (0.9) | 56 (5.4) | 0 (0.0) | 0 (0.0) | 65 (11.1) | 422 (2.3) |
Did not provide consent | 80 (3.6) | 26 (1.1) | 21 (8.5) | 11 (0.8) | 0 (0.0) | 0 (0.0) | 16 (0.2) | 40 (3.9) | 1 (0.3) | 0 (0.0) | 3 (0.5) | 198 (1.1) |
Previous discharge from hospital < 30 d | 11 (0.5) | 80 (3.3) | 6 (2.4) | 266 (19.7) | 25 (14.8) | 24 (0.8) | 66 (1.0) | 208 (20.1) | 9 (2.4) | 47 (29.9) | 89 (15.2) | 831 (4.5) |
No ILI symptoms, ≥ 5 y of agea | 0 (0.0) | 34 (1.4) | 60 (24.2) | 3 (0.2) | 2 (1.2) | 0 (0.0) | 3708 (54.6) | 60 (5.8) | 0 (0.0) | 19 (12.1) | 0 (0.0) | 3886 (21.2) |
Swabbed > 7 d after onset of symptoms (all ages)b | 55 (2.4) | 134 (5.5) | 16 (6.5) | 72 (5.3) | 0 (0.0) | 28 (1.0) | 226 (3.3) | 237 (22.9) | 17 (4.6) | 18 (11.5) | 218 (37.3) | 1021 (5.6) |
Sample inadequatec | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 2 (< 0.1) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 2 (< 0.1) |
Previous influenza infectiond | 3 (0.1) | 1 (< 0.1) | 1 (0.4) | 2 (0.1) | 0 (0.0) | 0 (0.0) | 2 (< 0.1) | 0 (0.0) | 2 (0.5) | 0 (0.0) | 0 (0.0) | 11 (0.1) |
Recruited in weeks without laboratory-confirmed influenza cases | 0 (0.0) | 0 (0.0) | 0 (0.0) | 57 (4.2) | 1 (0.6) | 735 (24.9) | 547 (8.1) | 83 (8.0) | 7 (1.9) | 69 (43.9) | 25 (4.3) | 1524 (8.3) |
Included in the analysis | 2071 (92.2) | 1934 (78.7) | 124 (50.0) | 704 (52.1) | 141 (83.4) | 2157 (73.2) | 2145 (31.6) | 96 (9.3) | 331 (89.2) | 0 (0.0) | 179 (30.7) | 9882 (53.8) |
RT-PCR result | ||||||||||||
Negative for influenza | 1331 (64.3) | 1256 (64.9) | 82 (66.1) | 561 (79.7) | 97 (68.8) | 1804 (83.6) | 1828 (85.2) | 51 (53.1) | 294 (88.8) | 0 (0.0) | 163 (27.9) | 7467 (75.6) |
Positive for influenza | 740 (35.7) | 678 (35.1) | 42 (33.9) | 143 (20.3) | 44 (31.2) | 353 (16.4) | 317 (14.8) | 45 (46.9) | 37 (11.2) | 0 (0.0) | 16 (2.7) | 2415 (24.4) |
Influenza A(H1N1)pdm09 | 527 (25.4) | 462 (23.9) | 23 (18.5) | 68 (9.7) | 25 (17.7) | 108 (5.0) | 163 (7.6) | 21 (21.9) | 5 (1.5) | 0 (0.0) | 13 (2.2) | 1415 (14.3) |
Influenza A(H3N2) | 16 (0.8) | 44 (2.3) | 2 (1.6) | 56 (8.0) | 1 (0.7) | 82 (3.8) | 3 (0.1) | 13 (13.5) | 18 (5.4) | 0 (0.0) | 0 (0.0) | 235 (2.4) |
Influenza A/not subtyped | 104 (5.0) | 11 (0.6) | 1 (0.8) | 10 (1.4) | 0 (0.0) | 0 (0.0) | 50 (2.3) | 4 (4.2) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 180 (1.8) |
Influenza B/Yamagata | 2 (0.1) | 1 (0.1) | 8 (6.5) | 11 (1.6) | 0 (0.0) | 12 (0.6) | 0 (0.0) | 2 (2.1) | 9 (2.7) | 0 (0.0) | 0 (0.0) | 45 (0.5) |
Influenza B/Victoria | 96 (4.6) | 153 (7.9) | 8 (6.5) | 0 (0.0) | 16 (11.3) | 155 (7.2) | 92 (4.3) | 4 (4.2) | 5 (1.5) | 0 (0.0) | 3 (0.5) | 532 (5.4) |
Influenza B/not subtyped | 8 (0.4) | 7 (0.4) | 1 (0.8) | 1 (0.1) | 2 (1.4) | 0 (0.0) | 12 (0.6) | 2 (2.1) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 33 (0.3) |