Study Guide | Microbiology, Pathogenesis
& Case Studies
2026/2027
, What are the key components to Key disease symptoms, diagnostic tests, treatment
include in a case study for strategies, and virulence factors.
gastrointestinal infections?
What are the two main types of Bacteria and Viruses.
microorganisms emphasized in
gastrointestinal infections?
Name two types of E. coli associated Enterotoxigenic E. coli (ETEC) and Enterohemorrhagic
with gastrointestinal infections. E. coli (EHEC).
What is the role of gut-associated GALT comprises 80% of the immune system located in
lymphoid tissue (GALT)? the gut.
What is the significance of Sorbitol- It differentiates E. coli O157:H7 from other strains
MacConkey agar in diagnosing E. coli based on its ability to ferment sorbitol.
infections?
What are the symptoms of EHEC Bloody diarrhea and potential development of
infection? hemolytic uremic syndrome (HUS).
What is a common reservoir for EHEC? Cattle.
Why are antibiotics not used to treat They can increase the risk of HUS by enhancing toxin
EHEC infections? production.
What is the incubation period for 3-4 days.
EHEC?