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Table 1 Characteristics of patients with influenza like illness (ILI) from a geriatric unit from 2005-2009

From: Five years of hospital based surveillance of influenza-like illness and influenza in a short-stay geriatric unit

Characteristics Community-acquired-ILI Hospital-acquired-ILI
n = 81 n = 34
Gender: men/women 23/58 9/25
Median age (range, years) 88 (69–103) 88 (77–99)
Vaccination against influenza   
During the ILI season 45 (55.6%) 22 (64.7%)
Every season 42 (51.9%) 19 (55.9%)
Symptoms   
Fever > 37.8°C 47 (73.7%)* 23 (67.6%)
Cough 69 (85.2%) 30 (88.2%)
Sore throat 10 (12.3%) 5 (14.7%)
Length of stay (range, days) 6 (1–33) 8 (2–53)
Reason of admission   
Cardio respiratory disease without fever 39 (48.2%) 18 (52.9%)
Infectious disease with fever 34 (42.0%) 2 (5.9%)
Fall or confusion 16 (19.8%) 9 (26.5%)
Other 14 (17.3%) 10 (29.4%)
Treatment against ILI   
Antipyretics 49 (60.5%) 21 (61.8%)
Antibiotics 75 (92.6%) 23 (67.6%)
Antiviral treament 0 (0%) 0 (0%)
Lab results   
Influenza 17 (21.0%) 6 (17.6%)
Respiratory Syntytial Virus (RVS) 5 (6.2%) 0 (0%)
Influenza and RVS coinfection 1 (1.2%) 0 (0%)
Rhinovirus 3 (3.7%) 1 (2.9%)
Herpes Simplex Virus (HSV) 1 (1.2%) 0 (0%)
Parainfluenzae 1(1.2%) 0 (0%)
No detected virus 53 (65.4%) 27 (79.4%)
Complications   
Cardiac 3 (3.7%) 0 (0%)
Respiratory 6 (7.4%) 1 (2.9%)
Death 5 (6.2%) 4 (4.8%)
  1. *ILI Percentages calculated for patients, n = 61; Data unknown for the other individuals.