TABLE 1.
Patient characteristics and serotype distribution of isolates from patients with invasive pneumococcal infection due to Peni and Penr strains
| Characteristic | No. (row %) of patients
|
P value | |
|---|---|---|---|
| Intermediate (n = 71) | Resistant (n = 72) | ||
| Age (yr) | |||
| 0–4 | |||
| White | 5 (33.3) | 10 (66.7) | 0.55 |
| Black | 7 (43.8) | 9 (56.3) | |
| 5–64 | |||
| White | 10 (35.7) | 18 (64.3) | 0.04 |
| Black | 24 (61.5) | 15 (38.5) | |
| ≥65 yrs | |||
| White | 21 (56.8) | 16 (43.2) | 0.76 |
| Black | 3 (50) | 3 (50) | |
| Gender | |||
| Male | 46 (52.3) | 42 (47.7) | 0.43 |
| Female | 25 (45.5) | 30 (54.5) | |
| Place of residence | |||
| Baltimore City | 41 (59.4) | 28 (40.6) | 0.02 |
| Rest of BMA | 30 (40.5) | 44 (59.5) | |
| Serotype | |||
| 6A | 2 (28.6) | 5 (71.4) | <0.01 |
| 6B | 7 (50) | 7 (50) | |
| 9V | 15 (38.5) | 24 (61.5) | |
| 14 | 4 (36.4) | 7 (63.6) | |
| 19A | 25 (92.6) | 2 (7.4) | |
| 19F | 4 (57.1) | 3 (42.9) | |
| 23F | 9 (28.1) | 23 (71.9) | |
| Othera | 5 (83.3) | 1 (16.7) | |
a
Serotypes include three nontypeable isolates one isolate each of serotypes 9N, 12F, and 35B. All except the serotype 35B isolates were Peni.