What is the first-line single-dose antibiotic for chancroid?

What is the first-line single-dose antibiotic for chancroid?

• A. Doxycycline 100 mg bid
• B. Ceftriaxone
• C. Azithromycin 1 gram PO single dose
• D. Penicillin VK

Answer: (C)

Chancroid requires an antibiotic regimen that reliably clears Haemophilus ducreyi with dosing that patients can complete easily. The ideal single-dose option combines high efficacy with oral administration to maximize adherence in outpatient care. Azithromycin given as a single 1 g oral dose does exactly that: one dose, taken by mouth, with good tissue penetration to the ulcer and surrounding tissues and cure rates that match other single-dose regimens. This simplicity and effectiveness make it the preferred first-line single-dose therapy for chancroid. Ceftriaxone given as a single intramuscular dose is also effective, but the need for an injection can be less convenient for many patients. Doxycycline is effective but requires several days of therapy, decreasing adherence. Penicillin VK has limited activity against Haemophilus ducreyi and is not recommended. So, the best choice for a first-line single-dose antibiotic is azithromycin 1 gram taken orally in one dose.

Chancroid requires an antibiotic regimen that reliably clears Haemophilus ducreyi with dosing that patients can complete easily. The ideal single-dose option combines high efficacy with oral administration to maximize adherence in outpatient care. Azithromycin given as a single 1 g oral dose does exactly that: one dose, taken by mouth, with good tissue penetration to the ulcer and surrounding tissues and cure rates that match other single-dose regimens. This simplicity and effectiveness make it the preferred first-line single-dose therapy for chancroid. Ceftriaxone given as a single intramuscular dose is also effective, but the need for an injection can be less convenient for many patients. Doxycycline is effective but requires several days of therapy, decreasing adherence. Penicillin VK has limited activity against Haemophilus ducreyi and is not recommended. So, the best choice for a first-line single-dose antibiotic is azithromycin 1 gram taken orally in one dose.