Table 1. Results of culture and PCR assays of 786 biopsy lymph node specimens*.
| Diagnosis or infection | Positive culture | Bartonella- positive PCR | 16S rDNA–positive PCR | Total |
|---|---|---|---|---|
| CSD | 1 | 244 | 122 | 244 |
| Bartonella quintana | 1 | 1 | 1 | 1 |
| Q fever | 2 | 0 | 3 | 3 |
| Tularemia | 1 | 0 | 1 | 1 |
| Abiotrophia adjacens | 2 | 0 | 2 | 2 |
| Actinomyces | 1 | 0 | 1 | 1 |
| Pasteurella multocida | 2 | 0 | 2 | 2 |
| Mycobacterial infection | 54 | 0 | 32 | 54 |
| Staphylococcus aureus | 16 | 0 | 16 | 16 |
| Coagulase-negative Staphylococcus | 15 | 0 | 10 | 23 |
| Streptococcus pyogenes | 10 | 0 | 10 | 10 |
| Fusobacterium spp. | 4 | 0 | 4 | 4 |
| Nocardia asteroïdes | 1 | 0 | 1 | 1 |
| Propionibacterium acnes | 15 | 0 | 7 | 16 |
| Prevotella sp. | 1 | 0 | 1 | 1 |
| Clostridium perfringens | 1 | 0 | 1 | 1 |
| Tropheryma whipplei | 0 | 0 | 1 | 1 |
| Miscellaneous | 21 | 0 | 21 | 21 |
| Neoplasm | 0 | 0 | 0 | 47 |
| Unknown | 0 | 0 | 0 | 350 |
| Total | 148 | 245 | 236 | 449 |
*CSD, cat-scratch disease. Among 244 specimens PCR-positive for B. henselae, 10 showed a concurrent mycobacterial infection and 3 showed a neoplasm.