TABLE 1.
Characteristics of specimen types and subjects from whom noninvasive S. pneumoniae isolates were collected during 2009 to 2012 in the United States
| Characteristic | No. (%) by yr |
No. (%) for all yrs | |||
|---|---|---|---|---|---|
| 2009 | 2010 | 2011 | 2012 | ||
| Age (yrs) | |||||
| 18–49 | 185 (33.7) | 241 (35.0) | 320 (33.9) | 237 (31.8) | 983 (33.6) |
| 50–64 | 178 (32.4) | 225 (32.7) | 311 (32.9) | 265 (35.5) | 979 (33.4) |
| ≥65 | 186 (33.9) | 222 (32.3) | 313 (33.2) | 244 (32.7) | 965 (33.0) |
| Census regiona (no. of sites) | |||||
| New England (5) | 88 (16.0) | 99 (14.4) | 155 (16.4) | 105 (14.1) | 447 (15.3) |
| Mid-Atlantic (7) | 50 (9.1) | 70 (10.2) | 53 (5.6) | 70 (9.4) | 243 (8.3) |
| East North Central (8) | 98 (17.9) | 136 (19.8) | 197 (20.9) | 154 (20.6) | 585 (20.0) |
| West North Central (5) | 69 (12.6) | 59 (8.6) | 85 (9.0) | 65 (8.7) | 278 (9.5) |
| South Atlantic (6) | 61 (11.1) | 88 (12.8) | 114 (12.1) | 66 (8.8) | 329 (11.2) |
| East South Central (5) | 61 (11.1) | 77 (11.2) | 114 (12.1) | 70 (9.4) | 322 (11.0) |
| West South Central (4) | 11 (2.0) | 33 (4.8) | 33 (3.5) | 39 (5.2) | 116 (4.0) |
| Mountain (4) | 39 (7.1) | 41 (6.0) | 64 (6.8) | 78 (10.5) | 222 (7.6) |
| Pacific (6) | 72 (13.1) | 85 (12.4) | 129 (13.7) | 99 (13.3) | 385 (13.2) |
| Specimen | |||||
| Lower respiratory tractb | 498 (90.7) | 604 (87.8) | 815 (86.3) | 630 (84.5) | 2,547 (87.0) |
| Upper respiratory tractc | 46 (8.4) | 82 (11.9) | 128 (13.6) | 116 (15.5) | 372 (12.7) |
| Other | 5 (0.9) | 2 (0.3) | 1 (0.1) | 0 (0.0) | 8 (0.3) |
| All | 549 (100.0) | 688 (100.0) | 944 (100.0) | 746 (100.0) | 2,927 (100.0) |
The New England region includes Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont; the Mid-Atlantic region includes New Jersey, New York, and Pennsylvania; the East North Central region includes Illinois, Indiana, Michigan, Ohio, and Wisconsin; the West North Central region includes Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, and South Dakota; the South Atlantic region includes the District of Columbia, Delaware, Florida, Georgia, Maryland, North Carolina, South Carolina, Virginia, and West Virginia; the East South Central region includes Alabama, Kentucky, Mississippi, and Tennessee; the West South Central region includes Arkansas, Louisiana, Oklahoma, and Texas; the Mountain region includes Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Utah, and Wyoming; and the Pacific region includes Alaska, California, Hawaii, Oregon, and Washington.
Most (62.8%; 1,600/2,547) of the specimens consisted of sputum.
The specimens were comprised predominantly of middle ear fluid or sinus secretions.