Edwardsiella tarda

1. What is Edwardsiella tarda?




Edwardsiella tarda is a Gram-negative, facultatively anaerobic, motile bacterium with peritrichous flagella. It belongs to the family Hafniaceae and is known to cause infections in both humans and animals, particularly fish1.

2. Transmission of Edwardsiella tarda

Edwardsiella tarda is primarily transmitted through exposure to contaminated water or ingestion of contaminated fish. It can also be spread by carrier animal feces12.

3. Epidemiology of Edwardsiella tarda

Edwardsiella tarda infections are relatively rare in humans but more common in fish. The bacterium has a worldwide distribution and is found in freshwater and marine environments. Human infections are often associated with gastrointestinal diseases, but extraintestinal infections like bacteremia and wound infections have also been reported34.

4. Pathology, Disease, and Infection Caused by Edwardsiella tarda

Edwardsiella tarda can cause a range of diseases including gastroenteritis, wound infections, and systemic infections such as septicemia, meningitis, cholecystitis, and osteomyelitis. In fish, it causes diseases like edwardsiellosis, which can lead to significant mortality in aquaculture56.

5. Laboratory Tests for Edwardsiella tarda

6. List of Specimen Types for Edwardsiella tarda

Specimens for Edwardsiella tarda isolation can include:

7. List of Sites for Specimen Collection for Edwardsiella tarda Isolation

Specimen collection sites for Edwardsiella tarda isolation include:

8. Colony Morphology of Edwardsiella tarda

  • Edge: Entire
  • Elevation: Raised
  • Surface: Smooth
  • Size: Small
  • Form: Circular
  • Opacity: Opaque
  • Colour: White to greyish
  • Consistency: Moist
  • Effect on the Media: Produces hydrogen sulfide, which may cause blackening on media like Triple Sugar Iron Agar (TSI)
  • Pigment: Non-pigmented18.

If you need more detailed information or have any other questions, feel free to ask!

Learn more

1en.wikipedia.org2canada.ca3academic.oup.com4amjcaserep.com5mdpi.com6jstor.org7microbenotes.com8ccjm.org9wwwnc.cdc.gov10bmcinfectdis.biomedcentral.com11ann-clinmicrob.biomedcentral.com12microbewiki.kenyon.edu13frontiersin.org14link.springer.com15academic.oup.com16veterinaryresearch.biomedcentral.com17ncbi.nlm.nih.gov18units.fisheries.org19bmcgenomics.biomedcentral.com20doi.org21creativecommons.org22doi.org23flandershealth.us24vetbact.org25omicsonline.org26


9. Treatment Guidelines for  Edwardsiella tarda 


  1. Antibiotic Therapy:

  2. Supportive Care:

    • Hydration and Electrolyte Management: Especially important in cases of gastroenteritis to prevent dehydration.
    • Pain Management: Analgesics may be administered to manage pain associated with infections.

  3. Surgical Intervention:

  4. Monitoring and Follow-Up:

    • Regular Monitoring: Patients should be regularly monitored for response to treatment and potential complications.
    • Follow-Up Cultures: To ensure the infection has been fully eradicated, follow-up cultures may be necessary.

  5. Preventive Measures:

If you need more detailed or specific guidelines, consulting a healthcare professional or infectious disease specialist is recommended. If you have any other questions or need further assistance, feel free to ask!

Learn more

1ann-clinmicrob.biomedcentral.com2ccjm.org3ann-clinmicrob.biomedcentral.com4en.wikipedia.org5uptodate.com


10. Antimicrobial Susceptibility Testing (AST) for  Edwardsiella tarda 

Commonly Tested Antibiotics

Edwardsiella tarda is generally tested for susceptibility to a range of antibiotics, including:

Testing Methods

  1. Disk Diffusion Method (Kirby-Bauer Test):

  2. Broth Microdilution:

  3. Automated Systems:

Interpretation of Results

Clinical Implications

If you have any more questions or need further details, feel free to ask!

Learn more

1ann-clinmicrob.biomedcentral.com2wwwnc.cdc.gov3mdpi.com4frontiersin.org5medscape.org6nissui-pharm.co.jp7bing.com



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