noun phaseÂ·out \ËfÄz-ËauÌt\. : the act of stopping something gradually over a period of time in a planned series of steps or phases.
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.
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 initial infection.