Template:Rocky Mountain Spotted Fever antibiotics

Revision as of 13:11, 20 March 2026 by Danbot (talk | contribs) (Add pediatric dosing - doxycycline first line for all ages per CDC)
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  • Doxycycline 100mg PO BID x 5-7 days[1]
    • Indicated also in children at 2.2mg/kg BID
  • Chloramphenicol 50-100mg/kg/day div q6hrs (max 4g/day)
    • Preferred agent in pregnancy. May cause aplastic anemia and Grey baby syndrome, more common in near term or 3rd trimester[2]
    • Consideration should be made for doxycycline over CAM in the 3rd trimester

Pediatric

Doxycycline is the first-line treatment for RMSF in children of ALL ages per CDC and AAP

  • Doxycycline 2.2mg/kg PO/IV BID (max 100mg/dose) x 5-7 days or until afebrile x 3 days
  • Chloramphenicol 50-100mg/kg/day IV divided q6hrs (max 4g/day) if doxycycline allergy
  1. Shandera WX, Roig IL: Viral & Rickettsial Infections, in Papadakis MA, McPhee SJ (eds): Current Medical Diagnosis and Treatment, ed 52. USA, McGraw-Hill, 2013, (Ch) 32: p 1412-1413.
  2. http://www.cdc.gov/rmsf/