Table 3 Microorganisms responsible for ventilator-associated pneumonia
SARS-CoV-2 pneumonia (n = 205) | Influenza pneumonia (n = 107) | No viral infection (n = 87) | |
|---|---|---|---|
Gram-positive cocci | |||
MSSA | 20 (9.8) | 5 (4.7) | 8 (9.2) |
MRSA | 6 (2.9) | 4 (3.7) | 2 (2.3) |
Enterococcus spp. | 7 (3.4) | 2 (1.9) | 2 (2.3) |
Streptococcus pneumoniae | 7 (3.4) | 1 (1) | 2 (2.3) |
Streptococcus spp. | 1 (0.5) | 0 (0) | 0 (0) |
Other | 0 (0) | 2 (1.9) | 3 (3.5) |
Gram-negative bacilli | |||
Pseudomonas aeruginosa | 51 (24.9) | 26 (24.3) | 15 (17.2) |
Enterobacter spp. | 37 (18) | 15 (14) | 12 (13.8) |
Klebsiella spp. | 26 (12.7) | 17 (15.9) | 12 (13.8) |
Escherichia coli | 19 (9.2) | 8 (7.5) | 5 (5.7) |
Acinetobacter baumannii | 9 (4.4) | 16 (15) | 10 (11.5) |
Stenotrophomonas maltophilia | 4 (2) | 2 (1.9) | 4 (4.6) |
Serratia marcescens | 9 (4.4) | 4 (3.7) | 1 (1.1) |
Citrobacter freundii | 6 (2.9) | 1 (1) | 1 (1.1) |
Citrobacter spp. | 5 (2.4) | 3 (2.8) | 3 (3.5) |
Proteus mirabilis | 5 (2.4) | 1 (1) | 2 (2.3) |
Haemophilus influenza | 3 (1.5) | 5 (4.7) | 5 (5.7) |
Morganella morganii | 2 (1) | 3 (2.8) | 0 (0) |
Other | 26 (12.7) | 8 (7.5) | 5 (5.7) |
Polymicrobial | 24 (11.7) | 8 (7.5) | 6 (6.9) |
Multidrug-resistant isolates* | 42 (20.7) | 42 (40) | 27 (31) |