Which antibiotic is appropriate for suspected Vibrio infection from a marine wound?

Which antibiotic is appropriate for suspected Vibrio infection from a marine wound?

• A. Ceftriaxone or Fluoroquinolone
• B. Doxycycline
• C. Azithromycin
• D. Amoxicillin

Answer: (A)

When a marine wound raises the possibility of Vibrio vulnificus infection, you need antibiotics that reliably cover vibrios with good tissue penetration. The best empiric strategy is to start doxycycline in combination with a third-generation cephalosporin (such as ceftriaxone) or with a fluoroquinolone. This pairing provides strong activity against Vibrio species and helps prevent rapid progression to severe cellulitis or sepsis, which Vibrio can cause, especially in vulnerable patients. Ceftriaxone or a fluoroquinolone fits this approach because they serve as the effective partner drug in the commonly used doxycycline-based regimen. Doxycycline alone can be active but is not usually given alone for Vibrio wound infections; amoxicillin generally isn’t reliable against Vibrio, and azithromycin alone isn’t the standard empiric choice. So the option that reflects including either ceftriaxone or a fluoroquinolone as part of the therapy aligns with the recommended treatment strategy. In practice, this treatment is started IV and adjusted as needed, with attention to wound care and potential surgical intervention.

When a marine wound raises the possibility of Vibrio vulnificus infection, you need antibiotics that reliably cover vibrios with good tissue penetration. The best empiric strategy is to start doxycycline in combination with a third-generation cephalosporin (such as ceftriaxone) or with a fluoroquinolone. This pairing provides strong activity against Vibrio species and helps prevent rapid progression to severe cellulitis or sepsis, which Vibrio can cause, especially in vulnerable patients.

Ceftriaxone or a fluoroquinolone fits this approach because they serve as the effective partner drug in the commonly used doxycycline-based regimen. Doxycycline alone can be active but is not usually given alone for Vibrio wound infections; amoxicillin generally isn’t reliable against Vibrio, and azithromycin alone isn’t the standard empiric choice. So the option that reflects including either ceftriaxone or a fluoroquinolone as part of the therapy aligns with the recommended treatment strategy. In practice, this treatment is started IV and adjusted as needed, with attention to wound care and potential surgical intervention.