17. Coliforms & Pseudomonas Flashcards
What is Enterbacterales?
An order/family of gram -ve, non-spore forming, facultatively anaerobic, rod-shaped bacteria
What are Coliforms?
- all coliforms are members of the Enterobacteriaceae family
- but not all enterobacteriaceae are coliforms
List the Enterobacterales (in our syllabus)
EKEPSN
Coliforms:
1. E. Coli
2. Klebsiella
3. Enterobacter
Non-coliforms:
4. Proteus
5. Salmonella
6. Non-typhoidal salmonella
Enterobacterales can be identified by..
MALDI-TOF
Coliforms are commonly found in..
- major component of intestinal flora
- GIT of humans & animals
- plants, soil
- non-resident/transient members of oral & oropharyngeal flora
[T/F] E.coli is the most common cause of UTI in young females
True
How is resistance to ABs acquired in E.coli?
Plasmid-acquired
Name the coliforms that are hospital associated.
- E.coli
- Klebsiella
- Enterobacter
Klebsiella is a common cause of _____ ________ in SEA
liver abscess
Which coliform is found in large amounts in faeces?
E.coli
[T/F] Coliforms are gram +ve
False. They are gram -ve.
- aka produce endotoxins in outer membrane
[T/F] Coliforms are facultative anaerobes
True.
- prefer aerobic conditions but able to grow even in anaerobic conditions
How is Salmonella transmitted?
via ingesting contaminated food/drinks
Which gram -ve bacteria is commonly found in water, plants & dental unit water lines?
Pseudomonas
(& Legionella)
[T/F] Pseudomonas is susceptible to Ampicillin
False.
- resistant to Ampicillin
- strong hospital bug!!
