Question

A 28-year-old with Lyme exposure had an engorged Ixodes scapularis tick removed 24 hours ago in an endemic area. No symptoms. Best post-exposure regimen?

Accepted Answer

Doxycycline 200 mg single dose within 72 hours

Answer

Amoxicillin 500 mg TID x 10 days

Answer

No prophylaxis is effective

Answer

Azithromycin 500 mg daily x 3 days

Answer

Doxycycline 100 mg BID x 7 days

Practice question

A 28-year-old with Lyme exposure had an engorged Ixodes scapularis tick removed 24 hours ago in an endemic area. No symptoms. Best post-exposure regimen?