Gastrointestinal Infections
Parent: MOC - Diseases by System · Workflow: MOC - Clinical Microbiology
Disease Notes
- Clostridioides difficile Infection ✅
- STEC / traveler’s diarrhea deep notes (TBD — see Escherichia coli)
- Viral gastroenteritis / hepatitis (TBD)
Syndromes
| Syndrome | Disease note | First specimens / methods |
|---|---|---|
| Acute watery diarrhea | TBD | Stool culture / multiplex GI PCR |
| Bloody diarrhea / dysentery | Partial → Escherichia coli | STEC testing; Campylobacter jejuni · Salmonella enterica; Shigella (TBD) |
| Food poisoning (preformed toxin) | TBD | Clinical; S. aureus toxin |
| Antibiotic-associated colitis | Clostridioides difficile Infection | NAAT/toxin algorithms · Bacterial Endospore |
| Hepatitis (infectious) | TBD | Viral serology/PCR → MOC - Virology |
| Intra-abdominal abscess / peritonitis | TBD | Operative culture; polymicrobial + anaerobes |
Pathogens (starter)
- Escherichia coli (ETEC, STEC/EHEC, etc.)
- Staphylococcus aureus (enterotoxin food poisoning)
- Salmonella enterica · Campylobacter jejuni · Vibrio cholerae · Helicobacter pylori · Shigella spp. · Clostridioides difficile
- Later: Shigella, norovirus, Giardia
Key Concepts
- Normal Microbiota disruption → C. difficile
- Toxin-mediated disease may not need positive stool culture