Surveillance and Epidemiologic Investigation

Question 1

All are risk factors for CDI except:

a. prolonged hospital stay
b. advanced age,
c. intestinal tube feedings
d. endotracheal intubation

Answer 1

d. endotracheal intubation

Question 2

The risk factors for CDI are :

1. recurrence are increased age
2. decreasing quality-of-life score, continued hospitalization
3. failure to develop an anamnestic or recall serum antibody response to toxin
   a. 1
   b. 1,2
   c. 2
   d. 1,2,3

Answer 2

d. 1,2,3

Question 3

Diagnostic studies for CDl should be performed only on patients who are :

a. symptomatic
b. asymptomatic
c. carrier
d. colonized

Answer 3

a. symptomatic

Question 4

What is the “gold

standard” for CDl diagnostic tests ?

Answer 4

STOOL CULTURE

Question 5

What is the most specific test for COl but is not as sensitive as stool culture for toxigenic C. difficile?

Answer 5

CELL CYTOTOXICITY ASSAY

Question 6

Tissues known to be highly infectious with prion diseases include :

1. brain
2. dura mater
3. pituitary tissue
4. spinal cord
5. eye
   a. 1
   b. 1,2,3
   c. 1,2,3,4
   d. 1,2,3,4,5

Answer 6

d. 1,2,3,4,5

Question 7

Tissues known to be low infectious with prion diseases include:

a. lung, liver, kidney, spleen, lymph nodes, and CSF
b. adipose tissue, dura mater, pituitary tissue
c. lung, liver, brain
d. CSF, spinal cord

Answer 7

a. lung, liver, kidney, spleen, lymph nodes, and CSF