DHARANESH, C. D2019-07-052019-07-052007http://krishikosh.egranth.ac.in/handle/1/5810112895Leptospirosis is a widespread zoonosis caused by members of the genus Leptospira. These highly invasive spirochetal pathogens are capable of infecting a broad range of mammalian hosts through either direct contact with an infected animal or indirect contact with soil or water contaminated with urine from a carrier animal It has re-emerged as an important zoonotic disease in India. The disease has been reported to be prevalent in almost all the domestic animal species in India namely cattle, buffalo, sheep, goat, swine, horse and dogs (Sawhney and Saxena, 1967).Thesis