In 1981 , Texas A&M Veterinary Medical Diagnostic Laboratory discovered a new strain of anthrax dubbed the Ames strain , which isolated from a diseased 14-month-old Beefmaster heifer that died in Sarita , Texas . This particular strain was later used in the 2001 anthrax attacks in which seven letters mailed to media outlets and US Senators on September 18 , 2001 and October 9 , 2001
2001 anthrax attacks
2001 anthrax attacks
Texas Veterinary Medical Diagnostic Laboratory