Why is TB in cattle a problem?

TB affects the digestive system which makes animals eat less and gain less. TB can also affect the lungs, reproductive organs, lymph nodes, and central nervous system. The cost of treatment of TB in cattle is too costly and impractical, plus TB is very contagious so animals must be quarantined. All cattle that are tested positive for Tuberculosis and any other animals that came in contact with that TB-positive animal either directly or indirectly must all be humanely euthanized. Usually this involves having the WHOLE herd euthanized. That is why TB is a huge problem.