10 days to 3 months
1 Secondary syphilis: incubation period 6-12 weeks (range 1-6 months): generalised infection. 2  Early latent syphilis: asymptomatic syphilis of less than 2 years' duration. 3  Late latent syphilis: asymptomatic syphilis of 2 years' duration or longer. Symptoms of primary syphilis usually occur within 3 weeks of the initial infection. Secondary syphilis occurs within 4 to 10 weeks following exposure. Tertiary syphilis typically appears 2 to 20 years after The serologic tests may be negative in the incubation period, in primary syphilis, and in untreated syphilis of many years' duration. A false-positive screening test for syphilis (VDRL or RPR) may be associated with many conditions and is usually reactive at low titers of less than 1:8. Acquired syphilis. 1  Primary syphilis: incubation period 2-3 weeks (range 9-90 days): local infection. 2  Secondary syphilis: incubation period 6-12 weeks (range 1-6 months): generalised infection. 3  Early latent syphilis: asymptomatic syphilis of less than 2 years' duration. 1 Primary syphilis: incubation period 2-3 weeks (range 9-90 days): local infection. 2  Secondary syphilis: incubation period 6-12 weeks (range 1-6 months): generalised infection. 3  Early latent syphilis: asymptomatic syphilis of less than 2 years' duration. A two to three week incubation period usually occurs between the inoculation of T pallidum and development of the lesion (the range of incubation period is reported as being 9-90 days). Local, non-tender lymphadenopathy is often associated with this lesion. Figure 3 ​3 shows primary syphilis lesions on the penis. After becoming infected with syphilis, there is an incubation period between 9 and 90 days (the average being around 21 days) before the first signs and symptoms of the disease appear. C. Incubation period: Usually 3 weeks, ranges from 10 days to 3 months for primary symptoms. D. Period of communicability: Moist mucocutaneous lesions of primary and secondary syphilis are infectious. However, it is difficult to differentiate between the infectious stage and the noninfectious early latent stage. Course of the Disease. The natural course of untreated syphilis goes through several well-described phases. After the initial infection, usually by sexual contact with a syphilitic lesion, there is an incubation period of about 3 weeks before the symptoms of primary syphilis develop. The primary lesion of syphilis is a chancre that occurs at the site of inoculation, most often the genitals.
http://patient.info/doctor/syphilis-pro http://www.ncbi.nlm.nih.gov/books/NBK64729/ http://www.ncbi.nlm.nih.gov/books/NBK64729/ http://patient.info/doctor/syphilis-pro http://patient.info/doctor/syphilis-pro http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1779891/ http://menshealth.about.com/od/sexualdiseasesstds/a/syphilis_signs.htm http://www.healthandwelfare.idaho.gov/Portals/0/Health/Disease/STD%20HIV/SYPHILIS_2012FINAL.pdf http://www.ncbi.nlm.nih.gov/books/NBK64729/
incubation period for syphilis