Table 3 FPEs with positive and negative PCR for influenza by sex, age groups, and clinical symptoms enrolled in the study, Dielmo and Ndiop, Senegal, 2013–2016
All cases of FPEs (n=1653) | FPEs with positive PCR for influenza A or B (n=357) | FPEs with negative PCR for influenza A or B (n=1296) | P-values | |
|---|---|---|---|---|
n (%) | n (%) | n (%) | ||
Gender | ||||
Female | 827 (50.0) | 181 (51.0) | 646 (50.0) | 0.77 |
Age groups (years) | ||||
0 – < 2 | 302 (18.3) | 44 (12.3) | 258 (20.0) | 0.01 |
2 - < 5 | 355 (21.4) | 78 (22.0) | 277 (21.3) | |
5 - < 15 | 561 (34.0) | 129 (36.1) | 432 (33.3) | |
15- < 50 | 366 (22.1) | 85 (24.0) | 281 (21.6) | |
≥ 50 | 69 (4.2) | 21 (6.0) | 48 (4.0) | |
Mean age (SD°) | 12.5 ± (14.6) | 14.0 ± (15.3) | 12.1 ± (14.5) | |
Median age (IIQ¶) | 7.1 ± (3.0–16.0) | 8.1 (3.6–18.0) | 7.0 (2.3–15.2) | |
Clinical symptoms | ||||
Headache1 | 1184/1286 (92.1) | 291/301 (96.6) | 893/985 (90.6) | < 0.001 |
Cough | 914 (55.3) | 289 (81.0) | 625 (48.2) | < 0.001 |
Asthenia grade 0 | 229 (14.0) | 43 (12.0) | 186 (14.3) | 0.07 |
Asthenia grade 1 | 95 (6.0) | 13 (3.6) | 82 (6.3) | |
Asthenia grade 2 | 424 (25.6) | 87 (24.4) | 337 (26.0) | |
Asthenia grade 3 | 905 (55.0) | 214 (60.0) | 691 (53.3) | |
Anorexia | 759 (46.0) | 180 (50.4) | 579 (45.0) | 0.05 |
Nasal discharge | 697 (42.2) | 254 (71.1) | 443 (34.2) | < 0.0001 |
Myalgia1 | 604/992 (61.0) | 132/235 (56.2) | 472/757 (62.3) | 0.18 |
Chills | 416 (25.2) | 86 (24.1) | 330 (25.5) | 0.60 |
Nausea/vomiting | 326 (20.0) | 51 (14.3) | 275 (21.2) | < 0.01 |
Sore throat1 | 187/996 (19.0) | 68/235 (29.0) | 119/761 (15.6) | < 0.001 |
Sweats | 171 (10.3) | 35 (10.0) | 136 (10.6) | 0.71 |
Arthralgia1 | 157/996 (15.8) | 37/209 (18.0) | 120/787 (15.2) | 0.52 |
Diarrhea | 154 (9.3) | 20 (5.6) | 134 (10.3) | < 0.01 |
Abdominal pain | 59 (3.6) | 7 (2.0) | 52 (4.0) | 0.06 |
Dyspnea | 47 (3.0) | 19 (5.4) | 28 (2.2) | < 0.01 |