🦠microbiology review

Gastrointestinal anthrax

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Gastrointestinal anthrax is an infection caused by ingesting Bacillus anthracis spores, leading to severe gastrointestinal symptoms. It is a rare but serious disease that can be fatal without prompt treatment.

5 Must Know Facts For Your Next Test

  1. Gastrointestinal anthrax is caused by Bacillus anthracis, a Gram-positive, spore-forming bacterium.
  2. Symptoms include severe abdominal pain, vomiting of blood, and bloody diarrhea.
  3. Untreated gastrointestinal anthrax has a high mortality rate, often exceeding 50%.
  4. The infection typically occurs after consuming contaminated meat or animal products.
  5. Diagnosis can be confirmed through stool cultures, blood tests, and imaging studies.

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