Clinical and laboratory characteristics of 100 healthy donors and 431 syphilis patients.

Data are no. (%) of patients, unless otherwise indicated.
aincludes 127 subjects with early latent syphilis. The cut-off for early and late latent syphilis is two years.
bDuration of clinical manifestations;
c,days;
d,months.
Abbreviations: IQR, interquartile range; RPR, rapid plasma reagin; VDRL, venereal disease research laboratory; TPPA, Treponema pallidum particle agglutination assay; ND, Not Done.