Endemic means that a disease: a. Occurs clearly in excess of normal expectancy b. Is habitually present in human popul
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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
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