TB Biosecurity Topics: Animal Health, Welfare and Trade Why does TB eradication matter? / Why does TB biosecurity matter? / There are 5 main ways TB can get into your herd. More in this topic Reducing the Risk from People and Equipment Reducing the Risk from Slurry and Farmyard Manure Reducing the Risk from Wildlife Reducing the Risk of Spread from Neighbouring Herd Reducing the Risk from Buying in Cattle