You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Incubation period of syphilis and explain in detail?
Ans. a (9-90 days). (Ref. Harrison, Principles of Internal Medicine, 18th /Chapter 169. Syphilis)SYPHILIS# T. Pallidum enters foetal circulation after 20th week of gestation with disappearance of cytotrophoblast in villi.0# Basic pathology is obliterative endarteritis.# Placenta becomes bulky and spirochaete can hardly be found in placenta.# Spirochaete can however be detected from maculopapular rash in baby.# Irrespective of the serology, treatment should be repeated in subsequent pregnancies.# Incubation period of syphilis is 9-90 days