The incubation period of leptospirosis is 7-26 days. The disease is the pathogen causing Spirochaeten.
Routes of infection are rats and Rattenkot. In most patients, the disease like the flu.
In the blood of patients multiply the leptospires up to 26 days. Then the symptoms come on.
After the incubation period the disease is most similar flu. Thereafter, a second thrust disease occur in up to 30 days.

Leptospirosis incubation period: 7-26 days, usually 7-14 days.