Table 3.
Presence of Treponema pallidum DNA in Saliva and Plasma From the Same Patient
| Variables | All Casesa (N = 234) | Primary Syphilis (n = 29) | Secondary Syphilisa (n = 72) | Latent Syphilisa (n = 82) | Symptomatic Neurosyphilisa (n = 51) |
|---|---|---|---|---|---|
| Saliva+/Plasma+ | 22.6 (53/234) | 17.2 (5/29) | 58.3 (42/72) | 4.9 (4/82) | 3.9 (2/51) |
| Saliva+/Plasma− | 21.8 (51/234) | 13.8 (4/29) | 29.2 (21/72) | 20.7 (17/82) | 17.6 (9/51) |
| Saliva−/Plasma+ | 6.8 (16/234) | 34.5 (10/29) | 2.8 (2/72) | 3.7 (3/82) | 2.0 (1/51) |
| Saliva−/Plasma− | 48.7 (114/234) | 34.5 (10/29) | 9.7 (7/72) | 70.7 (58/82) | 76.5 (39/51) |
Data are presented as % (n/N). Saliva+/Plasma+, patients who were T. pallidum DNA positive in saliva and plasma; Saliva+/Plasma−, patients who were T. pallidum DNA positive in saliva and negative in plasma; Saliva−/Plasma+, patients who were T. pallidum DNA negative in saliva and positive in plasma; Saliva−/Plasma−, patients who were T. pallidum DNA negative in saliva and plasma.
aThere were significant differences between the percentage of Saliva+/Plasma− and the percentage of Saliva−/Plasma+ at the same stage (P < .05).