An outbreak of gastritis occurred on a cruise ship. The data below were obtained
ID: 702177 • Letter: A
Question
An outbreak of gastritis occurred on a cruise ship. The data below were obtained shortly after the outbreak, from a questionnaire completed by everyone on board the ship. What is the most likely infective food on the cruise ship?
People who ate Food
People who did not Eat
Food
Sick
Well
Sick
Well
Herring
200
800
100
900
Chicken
650
350
100
900
Spinach Souffle
200
800
500
500
Oysters
300
700
400
600
Chocolate Mousse
600
400
450
550
herring
chicken
spinach souffle
oysters
chocolae mousse
People who ate Food
People who did not Eat
Food
Sick
Well
Sick
Well
Herring
200
800
100
900
Chicken
650
350
100
900
Spinach Souffle
200
800
500
500
Oysters
300
700
400
600
Chocolate Mousse
600
400
450
550
Explanation / Answer
Most people who got infected or sick is by eating Chicken and Chocolate Moussee
So, we have to to choose in between of them, which is most infected.
Statement 1 .) We can see that 650 got sick by eating Chicken and 350 didn't got sick by eating Chicken. And we can also see that people who don't eat chicken are less vulnerable to get sickness as only 100 people is getting sick by not eating Chicken.
Statement 2. ) While 600 got sick by eating Chocolate Moussee and 400 didn;t got sick by eating it. Here we can see that 450 people still getting sick even if they don't eat Chocolate Moussee.
From statement 1 and 2, we can conclude that Chicken is most infected food present on Cruise Ship.
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