Characteristics of six patients with unexplained oligoarthritis PCR positive for both Borrelia burgdorferi and Chlamydia trachomatis DNA in the synovial fluid
| Patient no | ||||||
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | |
| Sex (male/female) | M | M | M | F | M | F |
| Age (years) | 25 | 27 | 48 | 21 | 36 | 45 |
| Affected joints (knee/ankle) | k | k/k/a | k/k | k | a/a | k/k |
| Duration (months) | 9 | 18 | 30 | 2 | 1 | 8 |
| Inflammatory low back pain9 | + | − | + | − | + | − |
| HLA-B27 | + | − | − | − | + | − |
| Leucocytes in SF (n/mm3) | 23250 | 6450 | 10400 | 13150 | 14700 | 3600 |
| Neutrophils in SF (%) | 88 | 33 | 49 | 85 | 67 | 70 |
| History of tick bite/ECM | −/− | +/− | −/− | −/− | +/+ | −/− |
| B burgdorferiserology | + | + | − | − | − | + |
| History of urogenital infection | − | − | − | − | + | − |
| C trachomatis in urogenital smears1-150 | − | + | − | − | − | + |
| Chlamydia serology IgA/IgG (ELISA) | −/+ | +/+ | −/+ | −/+ | −/− | −/− |
SF = synovial fluid; ECM = erythema chronicum migrans.
↵1-150 Detected by immunofluorescence or culture.