Leptospirosis is an infectious disease that can occur in humans and animals and can be life-threatening. So it is an infection which human get from the animals. “Leptospirosis is a zoonotic disease caused by spirochetes of the genus leptospira and it is acquired through direct and indirect contact with the urine of an infected animal. The principal source of infection in humans is rat although other sources include dogs live stock rodents and so on” explains Dr Aparana Date General Physician Aparna Date's clinic Mumbai. Read: Leptospirosis — Are you at risk? She adds “Many types of animals - wild animals