Aeromonas infection

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Aeromonas infection
Aeromonas hydrophila in Wet Mount of Culture Microscopy.jpg
Synonyms
Pronounce N/A
Specialty N/A
Symptoms Diarrhea, wound infection, sepsis
Complications Necrotizing fasciitis, hemolytic uremic syndrome
Onset
Duration
Types N/A
Causes Aeromonas species
Risks Immunocompromised individuals, freshwater exposure
Diagnosis Stool culture, wound culture
Differential diagnosis Vibrio infection, Pseudomonas infection
Prevention Proper hygiene, avoiding contaminated water
Treatment Antibiotics such as ciprofloxacin, trimethoprim/sulfamethoxazole
Medication
Prognosis Generally good with treatment
Frequency
Deaths Rare


Aeromonas infection refers to a range of infections caused by bacteria of the genus Aeromonas. These bacteria are commonly found in aquatic environments and can cause various diseases in humans and animals.

Overview[edit | edit source]

Aeromonas species are Gram-negative, rod-shaped bacteria that are ubiquitous in freshwater and marine environments. They are known to cause infections in both immunocompetent and immunocompromised individuals. The most common species associated with human disease is Aeromonas hydrophila.

Pathogenesis[edit | edit source]

Aeromonas infections can occur through exposure to contaminated water or food, or through open wounds that come into contact with contaminated water. The bacteria produce a variety of virulence factors, including enterotoxins, hemolysins, and proteases, which contribute to their pathogenicity.

Clinical Manifestations[edit | edit source]

Gastrointestinal Infections[edit | edit source]

Aeromonas can cause gastroenteritis, presenting with symptoms such as diarrhea, abdominal pain, nausea, and vomiting. The infection is often self-limiting but can be severe in some cases.

Wound Infections[edit | edit source]

Wound infections can occur when open wounds are exposed to contaminated water. These infections can lead to cellulitis, abscess formation, and in severe cases, necrotizing fasciitis.

Systemic Infections[edit | edit source]

In immunocompromised individuals, Aeromonas can cause systemic infections such as bacteremia and sepsis. These conditions require prompt medical attention and treatment.

Diagnosis[edit | edit source]

Diagnosis of Aeromonas infection is typically made through culture of the bacteria from clinical specimens such as stool, wound swabs, or blood. Molecular methods such as PCR can also be used for identification.

Treatment[edit | edit source]

Treatment of Aeromonas infections depends on the severity and type of infection. Mild gastrointestinal infections may not require treatment, while more severe infections may be treated with antibiotics such as fluoroquinolones or trimethoprim-sulfamethoxazole. Wound infections may require surgical intervention in addition to antibiotic therapy.

Prevention[edit | edit source]

Preventive measures include avoiding exposure to contaminated water, especially for individuals with open wounds or compromised immune systems. Proper food handling and cooking can also reduce the risk of infection.

See also[edit | edit source]

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Contributors: Prab R. Tumpati, MD