Volume 12, Number 6—June 2006
Research
Severe Community-acquired Pneumonia Due to Staphylococcus aureus, 2003–04 Influenza Season
Table 1
Characteristic | No. (%), N = 17 |
---|---|
Median age, y (range) | 21 (3 mo–62 y) |
Sex, male | 8 (47) |
Race | |
White | 10 (59) |
Black | 7 (41) |
Underlying disease† | 5 (29) |
MRSA risk factors‡ | 4 (24) |
Documented influenza vaccination | 1 (6) |
Evidence of influenza infection | |
Laboratory-confirmed | 12 (71)§ |
Rapid antigen test | 10 (59) |
Paired serology | 2 (12) |
Fluorescent antibody staining | 2 (12) |
Clinical symptoms | |
Cough | 14 (82) |
Myalgias | 9 (53) |
Sore throat | 6 (35) |
Headache | 6 (35) |
Shortness of breath | 5 (29) |
Rigors | 4 (24) |
Clinical signs | |
Temperature >38°C | 12/13 (92) |
Hypotension (systolic blood pressure <90 mm Hg) | 12/13 (93) |
Normal or elevated leukocyte count† (>3,500/mm3) | 12/16 (75) |
Median leukocyte count (range) | 16,500 mm3 (6,000–295,000) |
Leukopenia (<3,500/mm3) | 4/16 (25) |
Thrombocytopenia (<150,000/mm3) | 6/16 (38) |
Radiologic documentation of pneumonia¶# | |
Lobar | 3/16 (19) |
Multiple lobe involvement | 4/16 (25) |
Diffuse/patchy infiltrates | 6/16 (38) |
Effusions/empyema | 5/16 (31) |
Cavitation/necrosis | 4/16 (25) |
*MRSA, methicillin-resistant S. aureus.
†One each of diabetes, multiple sclerosis, prune belly syndrome, cystic fibrosis, eczema.
‡Hospitalization, dialysis, surgery, or residence in a long-term care facility in the previous year; ever having an MRSA infection; and presence of percutaneous device or catheter at time of culture.
§One patient had influenza infection confirmed by all methods.
¶One patient died on arrival at the hospital. #Not mutually exclusive.
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