Leptospirosis is an infection caused by corkscrew-shaped bacterium referred to as spirochete. Signs and symptoms will vary from none too gentle like headaches, muscle pains, and fevers; too severe with hemorrhage from the lungs or infectious disease. If the infection causes the person to show yellow, have nephropathy and hemorrhage, its then referred to as Weils disease. If it conjointly causes hemorrhage into the lungs then its referred to as severe pulmonic hemorrhage syndrome. Up to thirteen totally different genetic kinds of spirochete could cause unwellness in humans. Its transmitted by each wild and livestock. The foremost common animal is that unfold the unwellness are rodents. Its usually transmitted by animal piss or by water or soil containing animal piss returning into contact with breaks within the skin, eyes, mouth, or nose. Within the developing world the unwellness most typically happens in farmers and low-income folks that board cities. Within the developed world it most typically happens in those concerned in out of doors activities in heat and wet areas of the planet. Diagnosing is often by trying to find antibodies against the bacteria or finding its polymer within the blood. Efforts to forestall the unwellness embrace protecting instrumentation to forestall contact once operating with probably infected animals, laundry once this contact, and reducing rodents in areas individuals live and work. The antibiotic, once utilized in an attempt to forestall infection among travellers, is of unclear profit. Vaccines for animals exist for sure variety of spirochete which can decrease the danger of unfold to humans. Treatment if infected is with antibiotics such as antibiotic, penicillin.