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Table 2 The pathogen results of pneumonia between immunocompetent and immunocompromised group

From: Characteristics of viral pneumonia in non-HIV immunocompromised and immunocompetent patients: a retrospective cohort study

Variables, n (%) Immunocompromised group,
n = 370
Immunocompetent group,
n = 436
P-Value
One virus 305 (82.4) 396 (90.8) < 0.001
Two or more viruses 65 (17.6) 40 (9.2) < 0.001
Influenza season
 Cytomegalovirus 57 (15.4) 12 (2.8) < 0.001
 Influenza A virus 63 (17.0) 165 (37.8) < 0.001
 Influenza B virus 20 (5.4) 25 (5.7) 0.840
 Rhinovirus 1 (0.3) 6 (1.4) 0.092
 Respiratory syncytial virus 48 (13.0) 65 (14.9) 0.430
 Adenovirus 9 (2.4) 14 (3.2) 0.508
 Parainfluenza virus 10 (2.7) 11 (2.5) 0.873
 Human metapneumovirus 1 (0.3) 0 (0) 0.277
 HSV-1 3 (0.8) 0 (0) 0.060
Non-influenza season
 Cytomegalovirus 158 (42.7) 10 (2.3) < 0.001
 Influenza A virus 23 (6.2) 36 (8.3) 0.268
 Influenza B virus 3 (0.8) 5 (1.1) 0.632
 Rhinovirus 7 (1.9) 31 (7.1) < 0.001
 Respiratory syncytial virus 21 (5.7) 25 (5.7) 0.972
 Adenovirus 5 (1.4) 32 (7.3) < 0.001
 Parainfluenza virus 17 (4.6) 33 (7.6) 0.081
 Human metapneumovirus 0 (0) 3 (0.7) 0.110
Pathogenic types of coinfections 204 (55.1) 101 (23.2) < 0.001
Bacteria 51 (13.8) 31 (7.1) 0.002
Streptococcus pneumoniae 1 (0.3) 5 (1.1) 0.149
Streptococcus constellatus 1 (0.3) 0 (0) 0.277
Haemophilus influenzae 1 (0.3) 0 (0) 0.277
Staphylococcus aureus 11 (3.0) 11 (2.5) 0.696
Escherichia coli 3 (0.8) 1 (0.2) 0.242
Enterobacter aerogenes 0 (0) 1 (0.2) 0.357
Enterobacter cloacae 2 (0.5) 0 (0) 0.470
Klebsiella pneumoniae 15 (4.1) 9 (2.1) 0.098
Pseudomonas 11 (3.0) 4 (0.9) 0.031
Proteus mirabilis 2 (0.5) 0 (0) 0.470
Acinetobacter 2 (0.5) 0 (0) 0.470
Nocardia 2 (0.5) 0 (0) 0.470
Atypical 11 (3.0) 23 (5.3) 0.105
Mycoplasma pneumoniae 6 (1.6) 23 (5.3) 0.006
Legionella 5 (1.4) 0 (0) 0.015
Pneumocystis 83 (22.4) 0 (0) < 0.001
Aspergillus 52 (14.1) 47 (10.8) 0.158
Mycobacterium tuberculosis 6 (1.6) 0 (0) 0.008
Non-tuberculosis mycobacteria 1 (0.3) 0 (0) 0.277
Pathogens in nosocomial infection 134 (36.2) 168 (38.5) 0.498
Acinetobacter 31 (8.4) 52 (11.9) 0.099
Pseudomonas 32 (8.6) 41 (9.4) 0.710
Klebsiella pneumoniae 14 (3.8) 17 (3.9) 0.932
Burkholderia 11 (3.0) 17 (3.9) 0.474
Enterococcus 6 (1.6) 2 (0.5) 0.097
Enterobacter cloacae 3 (0.8) 0 (0) 0.060
Escherichia coli 4 (1.1) 1 (0.2) 0.125
Proteus mirabilis 0 (0) 2 (0.5) 0.192
Stenotrophomonas maltophilia 4 (1.1) 11 (2.5) 0.131
Corynebacterium striatum 6 (1.6) 11 (2.5) 0.375
Staphylococcus aureus 4 (1.1) 0 (0) 0.030
Rolstonia mannitolytica 1 (0.3) 5 (1.1) 0.149
Other bacteria 5 (1.4) 3 (0.7) 0.344
 Aspergillus 12 (3.2) 6 (1.4) 0.074
 Trichosporon asahii 1 (0.3) 0 (0) 0.277
Only one virus 123 (33.2) 259 (59.4) < 0.001
>one organism 247 (66.8) 177 (40.6) < 0.001
  1. HSV-1 herpes simplex virus type 1