Table 1 Demographic characteristics of 3500 febrile children screened for CHIKV infection
From: Endemic chikungunya fever in Kenyan children: a prospective cohort study
|  | Ngerenya dispensary (N = 1701) | Pingilikani dispensary (N = 1799) | ||
|---|---|---|---|---|
| Â | CHIKF cases n/N (%) | P value (Chi2 test) | CHIKF cases n/N (%) | P value (Chi2 test) |
Sex | Â | 0.55 | Â | 0.07 |
 Female | 132/763(17.3) |  | 89/884 (10.1) |  |
 Male | 152/938 (16.2) |  | 70/915 (7.6) |  |
Age (years) | Â | 0.27 | Â | 0.67 |
 < 1 | 54/260 (20.8) |  | 25/341 (7.3) |  |
 1 to < 5 | 151/926 (16.3) |  | 69/774 (8.9) |  |
 5 to < 10 | 66/430 (15.3) |  | 43/469 (9.2) |  |
 10 to 15 | 13/85 (15.3) |  | 22/215 (10.2) |  |
Year |  | < 0.001 |  | 0.05 |
 2014 | No data |  | 43/509 (8.4) |  |
 2015 | 11/503 (2.2) |  | 37/366 (10.1) |  |
 2016 | 165/537 (30.7) |  | 43/365 (11.8) |  |
 2017 | 91/370 (24.6) |  | 17/304 (5.6) |  |
 2018 | 17/291 (5.8) |  | 19/255 (7.4) |  |
Season |  | < 0.001 |  | 0.15 |
 Jan – Mar | 93/423(22.0) |  | 49/432 (11.3) |  |
 Apr – Jun | 76/392 (19.4) |  | 58/678 (8.5) |  |
 Jul – Sep | 66/496 (13.3) |  | 31/443 (7.0) |  |
 Oct – Dec | 49/390 (12.6) |  | 21/246 (8.5) |  |
Clinical diagnosis | Â | 0.58 | Â | 0.06 |
 Othera | 26/160 (16.2) |  | 35/506 (6.9) |  |
 Malaria | 13/94 (13.8) |  | 70/591 (11.8) |  |
 Pneumonia | 9/58 (15.5) |  | 18/242 (7.4) |  |
 URTI | 198/1197 (16.5) |  | 20/231 (8.7) |  |
 Gastroenteritis | 13/83 (15.7) |  | 1/12 (8.3) |  |
 Undifferentiated fever | 25/109 (22.9) |  | 15/217 (6.9) |  |