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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)
  CHIKF cases
n/N (%)
P value
(Chi2 test)
CHIKF cases
n/N (%)
P value (Chi2 test)
Sex   0.55   0.07
 Female 132/763(17.3)   89/884 (10.1)  
 Male 152/938 (16.2)   70/915 (7.6)  
Age (years)   0.27   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   0.58   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)  
  1. a‘Other’ clinical diagnosis includes: helminthiasis, ear infections, and non-infectious conditions such as wounds, burns, and malnutrition
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