Microbiology: Enteric Bugs - Bacteria 2 Flashcards
How is a Vibrio vulnificus infection usually contracted?
Wound infection in fisherman
What virulence factors are associated with V. vulnificus?
Fe sequestering siderophores
How common and how serious is V. vulnificus?
Rare but it does have a 20% fatality rate
Found in Gulf Coast US
What is the presentation of V. vulnificus infection?
Fisherman with gastroenteritis, vomiting, diarrhea, abdominal cramps, and…
…blistering hemorrhagic bullae
What is the treatment for V. vulnificus?
Aggressive treatment with doxycycline.
What are the microbiological characteristics of Campylobacter fetus?
Gram-, OX+ spiral rods
Microaerophilic
How is Campylobacter fetus contracted?
spreads via human-human transmission or from raw meat/milk
What is the clinical presentation of C. fetus?
Bloody diarrhea with pus after fever
Guillain-Barre syndrome (Reactivity of CJ-lipo oligosacharide Abs with myelin)
How is C. fetus diagnosed?
Culture and Gram stain with seagull appearance
What is the treatment for C. fetus?
Usually self limiting (3-7 days)
Erythromycin
Resistant to FQs
What are the only anaerobic bacteria that form Endospores?
Clostridia species
Anaerobic, Gram-, coccobacilli, major component of normal flora?
Bacteroides fragilis
Prevotella melaninogenica
What are the virulence factors for Bacteroides Fragilis + Prevotella Melaninogenica?
Antiphagocytic capsule
How does P. Melaninogenica get its name?
Black colonies
What diseases are caused by Bacteroides Fragilis + Prevotella Melaninogenica?
- GI anaerobic abcess
- Pelvic Inflammatory
- Pulmonary Infections
