Table 1.
Distribution of Bacterial Pathogens by Influenza Status and Timing of Cultures
| Pathogen | Negative Influenza Test, No. (%) | Positive Influenza Test, No. (%) |
|---|---|---|
| Bacteria days 1–3 | (N = 5,573) | (N = 445) |
| Staphylococcus aureus | 1,569 (28.2) | 152 (34.2) |
| MSSA | 780 (14.0) | 91 (20.4) |
| MRSA | 835 (15.0) | 65 (14.6) |
| Streptococcus pneumoniae | 1,725 (31.0) | 111 (24.9) |
| Pseudomonas aeruginosa | 319 (5.7) | 37 (8.3) |
| Haemophilus influenzae | 417 (7.5) | 31 (7.0) |
| Klebsiella pneumoniae | 195 (3.5) | 13 (2.9) |
| Escherichia coli | 334 (6.0) | 25 (5.6) |
| Other streptococci | 342 (6.1) | 20 (4.5) |
| Stenotrophomonas maltophila | 33 (0.59) | 1 (0.22) |
| Bacteria days 4–14 | (N = 785) | (N = 92) |
| Staphylococcus aureus | 430 (54.8) | 51 (55.4) |
| MSSA | 133 (16.9) | 22 (23.9) |
| MRSA | 311 (39.6) | 31 (33.7) |
| Streptococcus pneumoniae | 21 (2.7) | 6 (6.5) |
| Pseudomonas aeruginosa | 90 (11.5) | 8 (8.7) |
| Haemophilus influenzae | 0 (0.0) | 1 (1.1) |
| Klebsiella pneumoniae | 31 (3.9) | 4 (4.3) |
| Escherichia coli | 37 (4.7) | 6 (6.5) |
| Other streptococci | 13 (1.7) | 1 (1.1) |
| Stenotrophomonas maltophila | 32 (4.1) | 4 (4.3) |
Note. MSSA, methicillin-susceptible Staphylococcus aureus; MRSA, methicillin-resistant S. aureus.