Midstream urine: ≥100 x 10^6 cfu/L Aerococcus urinae – Shipped November 2013
A sample simulating a midstream urine obtained from a symptomatic 85 year old male in a nursing home, was sent to category A, B, and C laboratories.
Participants were expected to isolate, report colony count, and identify Aerococcus urinae; antibiotic susceptibilities were not required.
MAIN EDUCATIONAL POINTS from M133-1
- Identification and reporting of Aerococcus species from urine culture is of particular importance due to the potential for serious complications (i.e. infective endocarditis, septicemia, etc.)
- Due to shared macroscopic morphology, a Gram stain is essential to distinguish aerococci from viridans group streptococci before discounting growth as being of non- or minor significance.