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Table 2 Microbiological findings of 174 patients with severe CAP

From: Viral-bacterial coinfection affects the presentation and alters the prognosis of severe community-acquired pneumonia

Patients All patients (n = 174) Bacterial group (n = 46) Viral group (n = 53) Mixed group (n = 45) No etiology group (n = 30)
S. pneumoniae 40 (23) 19 (41.3) - 21 (46.7) -
Other streptococci 6 (3.4) 2 (4.3) - 4 (8.9) -
S. aureus 12 (6.9) 6 (13) - 6 (13.3) -
L. pneumophila 8 (4.6) 7 (15.2) - 1 (2.2) -
C. pneumoniae – M. pneumoniae 6 (3.4) 5 (10.9) - 1 (2.2) -
H. influenzae 13 (7.5) 5 (10.9) - 8 (17.8) -
Enterobacteriaceae species 11 (6.3) 7 (15.2) - 4 (8.9) -
P. aeruginosa 7 (4) 2 (4.3) - 5 (11.1) -
Other bacteria 3 (1.7) 1 (2.2) - 2 (4.4) -
Mixed flora 10 (5.7) 6 (13) - 4 (8.9) -
Picornavirus (rhinovirus)a 22 (12.6) - 7 (13.2) 15 (33.3) -
Influenza A 32 (18.4) - 19 (35.8) 13 (28.9) -
Influenza B 6 (3.4) - 4 (7.5) 2 (4.4) -
Parainfluenza 3 (1.7) - 2 (3.8) 1 (2.2) -
Respiratory syncytial virus 9 (5.2) - 5 (9.4) 4 (8.9) -
Human metapneumovirus 12 (6.9) - 6 (11.3) 6 (13.3) -
Coronavirus 14 (8) - 7 (13.2) 7 (15.6) -
Adenovirus 3 (1.7) - 2 (3.8) 1 (2.2) -
Bocavirus 1 (0.6) - 1 (1.9) 0 (0) -
Cytomegalovirus 1 (0.6) - 1 (1.9) 0 (0) -
Herpes simplex virus 3 (1.7) - 1 (1.9) 2 (4.4) -
Varicella zoster virus 1 (0.6) - 1 (1.9) 0 (0) -
  1. Data are presented as number (%)
  2. CAP community-acquired pneumonia
  3. aPicornavirus included rhinovirus and enterovirus