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.
In children, it can present as a non-specific fever. The incubation period for S. Typhi is usually 8 to 14 days, but it can range from 3 to 60 days. [5, 6] For S. Paratyphi infections, the incubation period is similar to that of non-typhoidal Salmonella, 1 to 10 days.[5,6].1  Previous: Transmission.he incubation period, or the time from ingestion of the bacteria until the symptoms start, is generally 6 to 72 hours; however, there is evidence that in some situations the incubation can be longer than 10 days.