E. Coli O157:H7

Question 1

Gram Rxn

Answer 1

-

Question 2

Growth temp

Answer 2

30 - 42 C, growth absent at 44-45 C

Question 3

infectious dose

Answer 3

<100 cells

Question 4

susceptible individuals

Answer 4

children 2-10

elderly > 65

Question 5

major symptoms

Answer 5

• non-bloody diarrhea
• hemorrhagic colitis
• Complication: Hemolytic Uremic Syndrome (HUS) ~10% < 10 yrs old
• blood clots