Ames strain

The Ames strain is one of 89 known strains of the anthrax bacterium (Bacillus anthracis). It was isolated from a diseased 14-month-old Beefmaster heifer that died in Sarita, Texas in 1981. The strain was isolated at the Texas Veterinary Medical Diagnostic Laboratory and a sample was sent to the United States Army Medical Research Institute of Infectious Diseases (USAMRIID).[1] Researchers at USAMRIID mistakenly believed the strain came from Ames, Iowa because the return address on the package was the USDA's National Veterinary Services Laboratories in Ames and mislabeled the specimen.[2]

The Ames strain came to wide public attention during the 2001 anthrax attacks when seven letters containing it were mailed to media outlets and US Senators on September 18, 2001, and October 9, 2001.

Because of its virulence, the Ames strain is used by the United States for developing vaccines and testing their effectiveness. Use of the Ames strain started in the 1980s, after work on weaponizing the Vollum 1B strain ended and all weaponized stocks were destroyed after the end of the U.S. biological warfare program in 1969.[3]

  1. ^ Rasko DA, Worsham PL, Abshire TG, Stanley ST, Bannan JD, Wilson MR, et al. (March 2011). "Bacillus anthracis comparative genome analysis in support of the Amerithrax investigation". Proceedings of the National Academy of Sciences of the United States of America. 108 (12): 5027–32. Bibcode:2011PNAS..108.5027R. doi:10.1073/pnas.1016657108. PMC 3064363. PMID 21383169.
  2. ^ Warrick J (2002-01-29). "One Anthrax Answer: Ames Strain Not From Iowa". The Washington Post.
  3. ^ Fainaru S, Warrick J (2001-11-25). "Deadly Anthrax Strain Leaves a Muddy Trail". Washington Post.