Prabhavathy, HJoseph, CeciliaTANUVAS2019-10-252019-10-252018http://krishikosh.egranth.ac.in/handle/1/5810133044TNV_PLVT_2018_19(2)393-394Leptospirosis, a zoonotic bacterial disease prevalent in Chennai was taken for the study with 200 serum samples were collected from vaccinated and non-vaccinated dogs. Microscopic agglutination test showed 95 percent of the samples positive results for Leptospira of which 52.63 percent cases showed positive agglutination to one serovar and 47.36 percent cases showed positive agglutination to more than one serovar. Though the dogs were vaccinated with strains of serovars of L. canicola, L. icterohaemorrhagiae, L. pomona and L. grippotyphosa only. This study also showed that the non-vaccinated strains of L. autumnalis and L. australis showed high prevalence as compared to other serovars in vaccinated and un-vaccinated dogs.ennullArticle