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Table 2 Viral and bacterial infection status among pneumonia patients by age group

From: The impact of virus infections on pneumonia mortality is complex in adults: a prospective multicentre observational study

  Total 15–64 y 65–74 y 75–84 y 85 y+ P value*
Viruses N = 2617 N = 580 N = 447 N = 848 N = 742  
HRV 256 (9.8) 70 (12.1) 42 (9.4) 69 (8.1) 75 (10.1) 0.185
Inf A 101 (3.9) 22 (3.8) 13 (2.9) 32 (3.8) 34 (4.6) 0.343
RSV 101 (3.9) 12 (2.1) 20 (4.5) 32 (3.8) 37 (5.0) 0.016
PIV 3 49 (1.9) 14 (2.4) 7 (1.6) 17 (2.0) 11 (1.5) 0.311
HMPV 45 (1.7) 4 (0.7) 13 (2.9) 14 (1.7) 14 (1.9) 0.286
PIV 1 26 (2.0) 5 (0.9) 3 (0.7) 10 (1.2) 8 (1.1) 0.523
Inf B 24 (0.9) 6 (1.0) 4 (0.9) 3 (0.4) 11 (1.5) 0.588
PIV 2 14 (0.5) 4 (0.7) 3 (0.7) 3 (0.4) 4 (0.5) 0.567
HCoV (229E/OC43) 13 (0.5) 6 (1.0) 3 (0.7) 2 (0.2) 2 (0.3) 0.029
HAdV 6 (0.2) 1 (0.2) 1 (0.2) 4 (0.5) 0 (0.0) 0.708
HBoV 2 (0.1) 1 (0.2) 0 (0.0) 1 (0.1) 0 (0.0) 0.394
PIV 4 0 (0.0) 0 (0.0) 0 (0.0) 0 (0.0) 0 (0.0) NA
Any viruses 605 (23.1) 137 (23.6) 102 (22.8) 180 (21.2) 186 (25.1) 0.677
≥2 viruses 31 (1.2) 8 (1.4) 7 (1.6) 6 (0.7) 10 (1.3) 0.654
Any bacterial pathogens 992 (37.9) 265 (45.7) 194 (43.4) 288 (34.0) 245 (33.0) <0.001
Viral-bacterial co-infection 246 (9.4) 66 (11.4) 46 (10.3) 69 (8.1) 65 (8.8) 0.056
Any viral and bacterial pathogens 1351 (51.6) 336 (57.9) 250 (55.9) 399 (47.1) 366 (49.3) <0.001
  1. HRV human rhinovirus, InfA influenza A virus, RSV respiratory syncytial virus, PIV1–4 human parainfluenza virus type 1–4, HMPV human metapneumovirus, InfB influenza B virus, HCoV human coronavirus (229E/OC43), HAdV human adenovirus, HBoV human bocavirus
  2. *Chi-square tests for trend were performed