Answer Happy

An outbreak of gastritis occurred on a cruise ship. The data in the following table were obtained shortly after the outbreak, from a questionnaire completed by everyone on board the ship. Columns have been provided to guide you in your calculations for the attack rate and relative risk, as needed, to answer this question (6) and question 7 that follows. Hint: For foodborne outbreaks, Relative Risk is calculated by dividing the attack rate in the exposed by the attack rate in the non- exposed. People Who Ate Food People Who Did Not Eat Relative Risk Sick Well Attack Rate Sick Food Well Attack Rate Herring 200 800 100 900 Chicken 650 350 100 900 200 Spinach Souffle 800 500 500 Oysters 300 700 400 600 Chocolate Mousse 600 400 450 550 What is the relative risk of developing gastritis for herring consumption? 20 c What is the relative risk of developing gastritis for chicken consumption? I Choose > What is the relative risk of developing astritis for the consumption of chocolate Choose
What is the relative risk of developing gastritis for herring consumption? 2.0 What is the relative risk of developing gastritis for chicken consumption? ✓ [Choose ] 2.0 6.5 0.4 1.3 What is the relative risk of developing gastritis for the consumption of chocolate mousse?
What is the relative risk of developing gastritis for the consumption of chocolate mousse? ✓ [Choose ] 2.0 6.5 0.4 1.3 What is the relative risk of developing gastritis for spinach souffle?
Using the data and calculations from Question 6 above, what is the most likely infective food on the cruise ship? O Chicken Chocolate mousse Spinach souffle Herring