Table 2.
Main documented bacterial coinfections according to the type of viral disease.
| Variable | Influenza (N = 63) | SARS-CoV-2 (N = 81) | p-value |
|---|---|---|---|
| Gram positive-early | 15 (24%) | 11 (14%) | 0.2 |
| Gram positive-late | 6 (9.5%) | 23 (28%) | 0.010 |
| Gram positive-total | 21 (33%) | 34 (42%) | 0.4 |
| Gram negative-early | 26 (41%) | 20 (25%) | 0.053 |
| Gram negative-late | 21 (33%) | 41 (51%) | 0.056 |
| Gram negative-total | 47 (75%) | 61 (75%) | > 0.9 |
| Pseud. aeruginosa-early | 11 (17%) | 9 (11%) | 0.4 |
| Pseud. aeruginosa-late | 9 (14%) | 11 (14%) | > 0.9 |
| Pseud. aeruginosa-total | 20 (32%) | 20 (25%) | 0.5 |
| E. coli-early | 6 (9.5%) | 7 (8.6%) | > 0.9 |
| E. coli-late | 4 (6.3%) | 7 (8.6%) | 0.8 |
| E. coli-total | 10 (16%) | 14 (17%) | > 0.9 |
| Enterobacter-early | 1 (1.6%) | 0 (0%) | 0.4 |
| Enterobacter-late | 0 (0%) | 5 (6.2%) | 0.068 |
| Enterobacter-total | 1 (1.6%) | 5 (6.2%) | 0.2 |
| Acinetobacter-early | 2 (3.2%) | 1 (1.2%) | 0.6 |
| Acinetobacter-late | 6 (9.5%) | 11 (14%) | 0.6 |
| Acinetobacter-total | 8 (13%) | 12 (15%) | > 0.9 |
| Staph. aureus-early | 7 (11%) | 6 (7.4%) | 0.6 |
| Staph. aureus-late | 4 (6.3%) | 12 (15%) | 0.2 |
| Staph. aureus-total | 11 (17%) | 18 (22%) | 0.6 |
| Proteus mirabilis-early | 0 (0%) | 2 (2.5%) | 0.5 |
| Proteus mirabilis-late | 0 (0%) | 2 (2.5%) | 0.5 |
| Proteus mirabilis-total | 0 (0%) | 4 (4.9%) | 0.13 |
| Enterococcus-early | 0 (0%) | 2 (2.5%) | 0.5 |
| Enterococcus-late | 0 (0%) | 5 (6.2%) | 0.068 |
| Enterococcus-total | 0 (0%) | 7 (8.6%) | 0.018 |
| Coryneb. striatum-early | 4 (6.3%) | 1 (1.2%) | 0.2 |
| Coryneb. striatum-late | 0 (0%) | 6 (7.4%) | 0.035 |
| Coryneb. striatum-total | 4 (6.3%) | 7 (8.6%) | 0.8 |
| K. Pneumoniae-early | 2 (3.2%) | 3 (3.7%) | > 0.9 |
| K. Pneumoniae-late | 0 (0%) | 7 (8.6%) | 0.018 |
| K. Pneumoniae-total | 2 (3.2%) | 10 (12%) | 0.095 |
| S. marcescens-early | 1 (1.6%) | 0 (0%) | 0.4 |
| S. marcescens-late | 0 (0%) | 4 (4.9%) | 0.13 |
| S. marcescens-total | 1 (1.6%) | 4 (4.9%) | 0.4 |
| Strep. Pneumonia-early | 5 (7.9%) | 2 (2.5%) | 0.2 |
| Strep. Pneumonia-late | 2 (3.2%) | 1 (1.2%) | 0.6 |
| Strep. Pneumonia-total | 7 (11%) | 3 (3.7%) | 0.10 |
| H. influenza-early | 5 (7.9%) | 2 (2.5%) | 0.2 |
| H. influenza-late | 2 (3.2%) | 5 (6.2%) | 0.5 |
| H. influenza-total | 7 (11%) | 7 (8.6%) | 0.8 |
| Stenotr. Maltophilia-early | 1 (1.6%) | 0 (0%) | 0.4 |
| Stenotr. Maltophilia-late | 3 (4.8%) | 6 (7.4%) | 0.7 |
| Stenotr. Maltophilia-total | 4 (6.3%) | 6 (7.4%) | > 0.9 |
| Actinomyces-early | 1 (1.6%) | 1 (1.2%) | > 0.9 |
| Actinomyces-late | 1 (1.6%) | 2 (2.5%) | > 0.9 |
| Actinomyces-total | 2 (3.2%) | 3 (3.7%) | > 0.9 |
| Other-early | 1 (1.6%) | 1 (1.2%) | > 0.9 |
| Other-late | 1 (1.6%) | 2 (2.5%) | > 0.9 |
| Other-total | 2 (3.2%) | 3 (3.7%) | > 0.9 |
| Hospitalization length | 8 (4, 21) | 12 (6, 23) | 0.10 |
| Days to first bacteria | 1.0 (1.0, 3.0) | 4.0 (1.0, 8.0) | < 0.001 |