Table 1.
All clinic visits, ILI cases and Influenza-positive included in the study, by age groups, sites and season, 4S Network, 2013–2015. Positive and negative rates for influenza are calculated based on the number of ILI cases tested for each age group, site and year
| Characteristics | All clinic visits | ILI cases | ILI cases tested | Influenza positive |
|---|---|---|---|---|
| (N = 354 546) | (N = 10 996) | (N = 4032) | (N = 1022) | |
| n (%) | n (%) | n (%) | n (%) | |
| Age groups (years) | ||||
| 0–<2 | 68 849 (19.41) | 3699 (33.64) | 1046 (25.94) | 154 (14.72) |
| 2–<5 | 76 599 (21.60) | 2873 (26.13) | 978 (24.25) | 264 (26.99) |
| 5–<15 | 66 606 (18.79) | 2315 (21.05) | 920 (22.82) | 309 (33.59) |
| 15–<50 | 79 020 (22.29) | 1805 (16.41) | 938 (23.26) | 252 (26.86) |
| 50–<65 | 41 202 (11.62) | 241 (2.19) | 112 (2.77) | 32 (28.57) |
| ⩾65 | 22 270 (6.28) | 63 (0.57) | 38 (0.94) | 11 (28.95) |
| Sites | ||||
| AMJ (Dakar) | 33 235 (9.37) | 2369 (21.54) | 606 (15.09) | 133 (21.95) |
| St-Martin (Dakar) | 139 167 (39.25) | 613 (5.57) | 506 (12.54) | 93 (18.38) |
| Thiès | 14 989 (4.23) | 480 (4.36) | 310 (7.68) | 142 (45.81) |
| Saint-Louis | 30 825 (8.70) | 922 (8.38) | 153 (3.79) | 18 (11.77) |
| Fatick | 12 613 (3.56) | 284 (2.58) | 89 (2.20) | 46 (51.69) |
| Kaolack | 18 249 (5.15) | 176 (1.60) | 119 (2.95) | 41 (34.46) |
| Tambacounda | 34 357 (9.69) | 2108 (19.17) | 263 (6.52) | 61 (23.19) |
| Ziguinchor | 59 852 (16.88) | 3149 (28.64) | 556 (13.78) | 159 (28.60) |
| Dielmo | 5141 (1.45) | 518 (4.71) | 785 (19.46) | 186 (23.69) |
| Ndiop | 6118 (1.72) | 377 (3.43) | 645 (15.99) | 143 (22.17) |
| Seasons | ||||
| 2013 | 102 459 (28.90) | 4057 (36.90) | 1136 (28.17) | 345 (30.37) |
| 2014 | 121 281 (34.21) | 2568 (23.35) | 1543 (38.27) | 230 (14.91) |
| 2015 | 130 806 (36.89) | 4371 (39.75) | 1353 (33.56) | 447 (33.04) |