Flashcards in PHEW Deck (14)
Isolation of Campylobacter is carried out on which kind of agar and under what conditions?
Blood-based agar (eg CCDA) under reduced oxygen tension
Which agar is frequently used to identify enterobacteriacae and why?
MacConkey agar- Bile salts inhibit non-enterics
Out of E.coli and salmonella, which ferments lactose to form pink colonies on agar gel? (colour change from yellow to pink)
What family of bacteria does salmonella fall into?
Which antigens allow E.coli to attach to the urethra/bladder and cause urinary tract injections?
What are the clinical signs of E.coli?
How does E.coli attach?
Via pili and fimbria
Which toxins cause entero-haemorrhagic E.coli, by damaging blood vessels?
Also act on kidneys causing haemolytic uremic syndrome
Urinary tract infections are associated with which strains of E.coli?
Where is the main site of colonisation of E.coli?
How are humans infected with salmonella?
Via meat or eggs from infected animals or foodstuffs contaminated with faeces from infected animals
Person-to-person transmission in families
How long do salmonella symptoms last?
Human campylobacteriosis results in what side effect?
Painful diarrhoea which is often profuse but self-limiting