Spatio-temporal distribution of bovine leptospirosis in Tamil Nadu and a risk factor analysis

Leptospirosis is a bacterial zoonotic disease that causes abortions, infertility and mastitis in cattle. This research was aimed at investigating the temporal spatial pattern, sex, age, breed wise distribution of leptospirosis Tamil Nadu. A seroreactivity 28.2% noticed among cattle seven agro-climatic zones. The trend recorded during post-monsoon season (30.5%) significant when compared to pre-monsoon (25.8%). revealed high proportion (31.2%) North East zone comparison with other serogroups Australis (37.9%), Hebdomadis (30.6%), Hardjo (29.9%), Javanica (28.1%) Pomona (19.7%) were predominant all observation 44.2% buffaloes most probably associated wallowing behaviour. 31.1% Holstein Friesian than native discloses susceptibility. 30.2% animals aged above three years shows an age-related susceptibility, but there no difference between sexes. organised farm (33.8%) higher individually reared (25.5%) indicating impact rearing system. Leptospira strains isolated identified as interrogans serogroup Australis, Canicola Sejroe. study depicted epidemiology emphasises need be included health surveillance programmes.