Stool: Shigella sonnei – Shipped November 02, 2020
A simulated stool sample collected from a 10 year old boy on farm with diarrhea was sent to category A laboratories. Participants were expected to isolate, identify, and perform susceptibility testing of Shigella sonnei.
MAIN EDUCATIONAL POINTS from M203-3
- It is important not to confuse a Shigella species (especially S. sonnei) with E. coli since they are very closely related and some identification systems can mis-interpret the test results if the isolate is only subjected to an automated test system.
- Antimicrobial treatment is usually necessary for most Shigella infections since this pathogen invades the lamina propria of the intestinal tract, and fever is common.