ID:IOTS - Infectious Disease Insight Of Two Specialists 31. Salmonella and Shigella
Sep 26, 2022
Dive into the fascinating world of Salmonella and Shigella, the notorious culprits behind diarrhea. Discover the complexities of the Salmonella genus and its far-reaching implications on public health. Learn about the dangers of untreated salmonella typhi infections, including the notorious rose spots. Hear about the historical Edinburgh typhoid outbreak and the challenges faced in treating antibiotic-resistant strains. The hosts' humor adds a delightful twist to serious topics in infectious disease!
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Edinburgh Typhoid Detective Story
- Callum recounts an early-20th-century Edinburgh typhoid investigation that traced cases to sewage-contaminated water and a probable chronic carrier.
- The story highlights old-school detective microbiology and public-health sleuthing.
Molecular Trickery Behind Salmonella Invasion
- Salmonella pathogenicity islands encode type III secretion systems that inject effectors to manipulate host actin.
- This enables epithelial and macrophage invasion and intracellular survival, explaining systemic spread.
Flag Suspected Typhoid For Lab Safety
- If you clinically suspect typhoid, alert the lab because S. Typhi is a lab hazard and requires biosafety handling.
- Ensure blood cultures with suspected typhoid are processed in higher containment to protect staff.