Tickpedia
Removal · field guidance

Single-dose prophylactic doxycycline 200 mg (IDSA criteria checklist)

A single 200 mg dose of doxycycline can prevent Lyme disease if all four IDSA criteria are met within 72 hours of removal.

Steps

schema.org/HowTo
  1. 01
    Confirm tick was an Ixodes scapularis or pacificus (blacklegged) adult or nymph.
  2. 02
    Confirm the tick was attached at least 36 hours, or appears engorged.
  3. 03
    Confirm the bite occurred in a Lyme-endemic county.
  4. 04
    Confirm prophylaxis can begin within 72 hours of tick removal.
  5. 05
    If all four are true and there is no contraindication, IDSA endorses a single 200 mg oral dose of doxycycline (4.4 mg/kg up to 200 mg in kids).
  6. 06
    This is a clinician-prescribed decision; bring the tick, the timeline, and the location to the visit.

Wild facts

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