Gram Negative Bacilli
All are true about EHEC except: (DNB June 2011)
|A||Sereny test is positive|
|B||Does not ferment sorbitol|
|D||Elaborates shiga like exotoxin|
Sereny test is positive.
a. EHEC produces shiga like toxin. It is associated with hemorrhagic colitis and HUS.
b. Selective medium used is Sorbitol MacConkey’s agar: it produces non sorbitol fermenting colonies.
c. Sereny’s test is positive in shigella and EIEC.