🦠microbiology review

Aeromonas hydrophila

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

Definition

Aeromonas hydrophila is a Gram-negative, rod-shaped bacterium commonly found in freshwater environments. It can cause infections in the skin, eyes, and gastrointestinal tract.

5 Must Know Facts For Your Next Test

  1. Aeromonas hydrophila is often associated with wound infections, especially after exposure to contaminated water.
  2. Symptoms of gastrointestinal infection by Aeromonas hydrophila include diarrhea, nausea, and abdominal pain.
  3. This bacterium produces various virulence factors, such as hemolysins and enterotoxins, which contribute to its pathogenicity.
  4. Immunocompromised individuals are at higher risk for severe infections caused by Aeromonas hydrophila.
  5. Infections can be treated with antibiotics like ciprofloxacin or trimethoprim-sulfamethoxazole.
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