M211-5

CSF: Cronobacter sakazakii  – Shipped May 10, 2021

HISTORY

A simulated CSF sample collected from a 9-day-old female in neonatal intensive care unit (NICU) was sent to category A laboratories.

Participants were expected to identify Cronobacter sakazakii.

 

MAIN EDUCATIONAL POINTS from M211-5

  1. Cronobacter sakazakii is an important cause of neonatal meningitis.
  2. Cronobacter spp. are difficult to accurately speciate, even with MALDI-TOF; laboratories should consider reporting as Cronobacter sp. to avoid misidentification.
  3. Despite being closely related to Enterobacter, Cronobacter spp. do not have an easily inducible AmpC gene, and should not be reported as an intrinsic AmpC producer.

Full critique (PDF)

Posted in Clinical Bacteriology Results, critiques