NR503 Week 4 Midterm Exam Latest (55 questions)

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

a. 60/75

b. 70/200

c. 60/133

d. 60/275