Brain abscess caused by Lactococcus lactis cremoris in a child

Eur J Pediatr. 2011 Dec;170(12):1603-5. doi: 10.1007/s00431-011-1586-3. Epub 2011 Sep 28.


Lactococcus lactis cremoris infections are very rare in humans. It is recognized as a commensal organism of mucocutaneous surfaces of cattle, and is occasionally isolated from human mucocutaneous surfaces. We report a brain abscess caused by L. lactis cremoris in an immunocompetent child. A 19-month-old female patient was admitted with fever and vomiting. Brain computed tomography (CT) revealed brain abscess. L. lactis cremoris was isolated from culture of the abscess material. The patient was treated with pus drainage from brain abscess and antibiotics including vancomycin and meropenem. The patient recovered completely. To our knowledge, this is the first report of a L. lactis cremoris infection in children.

Publication types

  • Case Reports

MeSH terms

  • Animals
  • Anti-Bacterial Agents / therapeutic use
  • Brain Abscess / diagnosis*
  • Brain Abscess / microbiology
  • Brain Abscess / therapy
  • Cattle
  • Diagnosis, Differential
  • Drainage
  • Female
  • Follow-Up Studies
  • Humans
  • Infant
  • Lactococcus lactis / isolation & purification*
  • Magnetic Resonance Imaging
  • Milk / microbiology*
  • Temporal Lobe*
  • Tomography, X-Ray Computed


  • Anti-Bacterial Agents