This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Which of the following E. coli causes diarrhoea by affecting intestinal surface villi: 
Select and explain. 
A. EAEC, B. EHEC, C. EAEC, D. EPEC
D: EPEC
Answer: D: EPEC 
Explanation: Ans. (d) EPEC Ref. Ananthanarayan 9/e, p 279 Enteropathogenic = enteroadherent E. coli Cause diarrhea in infant and children. Strains that carry PEAF plasmid are termed typical EPEC while those lacking it are called atypical Non-toxigenic and non-invasive. Produce diarrhea by disruption of brush border. Bacilli adhere to upper small intestine through adhesion receptor synthesized by bacteria which is then inseed in to host put wall.