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Table 2 Episodes of acute respiratory infections and influenza-like illness and virus identification during the surveillance 1 and 2 periods in patients with JIA

From: Prospective surveillance study of acute respiratory infections, influenza-like illness and seasonal influenza vaccine in a cohort of juvenile idiopathic arthritis patients

  SV 1 SV 2 p
Patients (n) 61 63  
ARI episodes 68 37 <0.01*
ILI episodes (% of ARI) 23 (33,8) 5 (13,5) <0.01*
Samples collected 26 7  
Positive samples - PCR (n) Flu A (4) Flu A (1)  
Flu B (1) HRV (1)  
HRV (2) HBov (1)  
HPIV 1 (2) HRSVA + HMPV (1)  
HPIV 3 (1)   
HAdv (2)   
HRSVA (1)   
HRV + HAdv (2)   
HRV + HCov (1)   
N (%) of patients who received Flu Vaccine in the period 1 (1.5%) 44 (69.8%)  
  1. ARI: Acute respiratory infection, ILI: Influenza-like illness, Flu: Influenza virus, HRSV: respiratory syncytial virus A and B, HMPV: metapneumovirus, HPIV: parainfluenza virus 1 and 3, HBov: bocavirus, HAdv: adenovirus, HRV: rhinovirus, HCov: coronavirus OC43 and 229E. SV1: Surveillance 1, from March to August 2007. SV2: Surveillance 2, from March to August 2008, influenza vaccine was given in this period.* Poisson’s test.