Southwest Disease Map
Where livestock diseases have been documented in Arizona, New Mexico and Texas, drawn from the sources cited in 3T’s veterinary-reviewed guides. Filter by outbreak status, disease, species and risk to people.
What Must Be Reported, and Where
Veterinarians and labs must report some diseases to the state veterinarian (animals) or the health department (people). Diseases off these lists are rarely counted, so they look rarer than they are. A dash means the disease does not infect people.
Swipe the table to see New Mexico and Texas.
No Color Does Not Mean No Disease
The map shows what published sources have documented, not how common a disease is. Many of these diseases do not have to be reported in animals, so cases go uncounted, and a county with no record may still have infected herds. The reporting table above shows which ones.
Records come from different species, years and methods, from confirmed outbreak cases to blood surveys showing past exposure. Compare them within a disease, not across diseases. Human case counts are by county of residence. Records that name a state but not a county appear in the state panels below the map.
Each record links to its 3T guide and, where available, to the original source. Screwworm cases are confirmed animal cases from the USDA dashboard. Suspect a case? Call your veterinarian or your state veterinarian’s office.