Blood Culture: Saccharomyces cerevisiae – Shipped May 2012
The challenge was sent to category A laboratories. The sample was a simulated blood culture obtained from a 70 year old ICU patient with history of treatment for Clostridium difficile infection (CDI).
Participants were expected to isolate and identify Saccharomyces cerevisiae . No susceptibility was required as the challenge was sent for identification purposes only.
MAIN EDUCATIONAL POINTS from M121-4
- Yeasts recovered from blood cultures should be identified to the species level. Laboratories that do not routinely identify yeasts in house should immediately refer the isolate to a reference laboratory for identification and susceptibility testing.
- Patients with antibiotic associated diarrhea who are taking probiotics that include Saccharomyces, particularly immunocompromised patients may develop a bloodstream infection.