TABLE 1.
Summary of invasive pneumococcal disease surveillance cases, South Africa, 2010-2012
| Cases reported to NICD as | No. of cases in: |
Total no. (%) of cases | ||
|---|---|---|---|---|
| 2010 | 2011 | 2012 | ||
| Viable isolates | 2,873 | 2,409 | 2,160 | 7,442 (66) |
| Nonviable isolatesa | ||||
| Nonviable transport medium | 262 | 228 | 143 | 633 (6) |
| Blood culture broths | 136 | 84 | 79 | 299 (3) |
| lytA-positive, culture-negative clinical specimensb | 40 | 69 | 50 | 159 (1) |
| Isolate/specimen not received | 886 | 1,014 | 791 | 2,691 (24) |
| Total | 4,197 | 3,804 | 3,223 | 11,224 (100) |
a
All nonviable isolates received are considered invasive pneumococcal disease (IPD) cases.
b
Culture-negative clinical specimens are only considered IPD cases if identified as positive for the lytA gene.