Question

In an outbreak of gastroenteritis among people who ate meals at a hotel, 99 persons ate raw salad, 30 of whom developed gastroenteritis. What is the risk of illness (incidence rate) among persons who ate salad?

Answer 1

The risk of illness (incidence rate) among persons who ate salad in this outbreak is approximately 30.3%.

Step-by-step explanation:

The risk of illness (incidence rate) among persons who ate salad can be calculated by dividing the number of people who developed gastroenteritis after eating salad by the total number of people who ate salad. In this case, 30 people developed gastroenteritis after eating salad out of a total of 99 people who ate salad.

To calculate the risk of illness, you divide 30 by 99 and then multiply by 100 to get a percentage. The risk of illness among persons who ate salad in this outbreak is approximately 30.3%.