A picnic was attended by 1,000 people. Potato salad was served at the event. The next day, 140 people reported vomiting and diarrhea. What was the attack rate of this food-borne illness?

Question

A picnic was attended by 1,000 people. Potato salad was served at the event. The next day, 140 people reported vomiting and diarrhea. What was the attack rate of this food-borne illness?

Quizplus · Accepted Answer

The attack rate is calculated by dividing the number of people who got sick by the total number of people who attended the event, then multiplying by 100. 
Attack rate = (140/1,000) x 100 = 14%. 
Therefore, the answer is B.

A Picnic Was Attended by 1,000 People