There were 27 students at the picnic, of which 18 developed illness. The attack rate was thus nearly 67%. What does this mean?
A) The attack rate describes the number of susceptible people who become ill in a population after exposure to an infectious agent, in this case 67%.
B) The attack rate is the number of new cases in a specific time period in a given population, in this case 27.
C) This describes the number of people in a defined population who die during a given period, in this case nearly 18%.
D) The attack rate is the total number of cases at any time or for a specific period in a given population, in this case 27.
E) It describes the situation in which a particular disease arises from several genera of a person's own normal microbiota, in this case 18.

Question

There were 27 students at the picnic, of which 18 developed illness. The attack rate was thus nearly 67%. What does this mean?
A) The attack rate describes the number of susceptible people who become ill in a population after exposure to an infectious agent, in this case 67%.
B) The attack rate is the number of new cases in a specific time period in a given population, in this case 27.
C) This describes the number of people in a defined population who die during a given period, in this case nearly 18%.
D) The attack rate is the total number of cases at any time or for a specific period in a given population, in this case 27.
E) It describes the situation in which a particular disease arises from several genera of a person's own normal microbiota, in this case 18.

Quizplus · Accepted Answer

The question specifically mentions the "attack rate" and how it relates to the number of students who became ill after exposure to an infectious agent. This means that option A, which accurately defines the attack rate as the number of susceptible people who become ill in a population after exposure to an infectious agent, is the best choice. Options B, C, D, and E do not accurately describe the situation presented in the question.

There Were 27 Students at the Picnic, of Which 18