Raj, G. DhinakarTANUVAS2018-11-022018-11-022018-09http://krishikosh.egranth.ac.in/handle/1/5810082784Epidemiology is the scientific study of why and how frequently diseases occur in different human or animal populations. Surveillance is addressed to detect a pathogen that is not yet present or diagnosed in the population at risk. Disease surveillance is the continuous and systematic ongoing collection, collation, analysis and dissemination of disease-related data.en-USVeterinary ScienceAnimal Husbandry Extension EducationArticle