NR503 Week 4 Midterm Exam Latest/NR503 Week 4 Midterm Exam Latest

  

Question

Question 1

Endemic means that a disease:

a. Occurs clearly in excess of normal expectancy

b. Is habitually present in human populations

c. Affects a large number of countries simultaneously

d. Exhibits a seasonal pattern

e. Is prevalent among animals

Question 2

The first table shows the total number of persons who eat each of two specified food items that were possibly ifeffective with group A streptococci. The second table shows the number of sick persons (with acute sore throat) who eat each of the various specified combinations of the food items. 

  

Total number of persons who ate each   specified combination of food items

 

Ate   Tuna

Did   not Ate Tuna

 

Ate   egg salad

75

100

 

Did   not egg salad

200

50

  

Total   number of persons who ate each specified combination of food items & who   later became sick (with acute sore throats)

 

Ate   Tuna

Did   not Ate Tuna

 

Ate   egg salad

60

75

 

Did   not egg salad

70

15

What is the sore throat attack rate in persons who ate both egg salad & tuna