There was a food poisoning outbreak on April 1,2018,at the City Z Food Safety Conference.There were 1,000 people registered for the conference with luncheon,100 volunteers to host attendees,and 50 people who served the luncheon during the conference.Except for 50 people who served the food,all of the participants and volunteers ate the food from the luncheon at the conference on April 1,2018.After an initial outbreak of food poisoning is reported,an epidemiologist sends surveys to all people at risk to investigate the cause.However,only 900 people among those at risk answer the survey.After analysis of 900 survey results,the epidemiologist concludes that the most suspected foods in the outbreak are pepperoni pizza and meatball spaghetti.What is the most suspected food for food poisoning after cross-tabulation? Use the following table to answer the question. Summary of Survey Responses
$10100\begin{array} { | l | l | l | } \hline & \begin{array} { l } \text { Number of people who } \\\text { developed the case definition } \\\text { symptoms }\end{array} & \begin{array} { l } \text { Number of people who ate the } \\\text { food }\end{array} \\\hline \text { Pepperoni pizza only } & 113 & 275 \\\hline \text { Meatball spaghetti only } & 62 & 375 \\\hline \begin{array} { l } \text { Both pepperoni pizza and } \\\text { meatball spaghetti }\end{array} & 57 & 150 \\\hline \begin{array} { l } \text { Neither of pepperoni pizza or } \\\text { meatball spaghetti }\end{array} & 10 & 100 \\\hline\end{array}$

A) Pepperoni pizza only
B) Meatball spaghetti only
C) Both pepperoni pizza and meatball spaghetti
D) Neither pepperoni pizza nor meatball spaghetti
E) We cannot determine the cause of food based on this information

Question

There was a food poisoning outbreak on April 1,2018,at the City Z Food Safety Conference.There were 1,000 people registered for the conference with luncheon,100 volunteers to host attendees,and 50 people who served the luncheon during the conference.Except for 50 people who served the food,all of the participants and volunteers ate the food from the luncheon at the conference on April 1,2018.After an initial outbreak of food poisoning is reported,an epidemiologist sends surveys to all people at risk to investigate the cause.However,only 900 people among those at risk answer the survey.After analysis of 900 survey results,the epidemiologist concludes that the most suspected foods in the outbreak are pepperoni pizza and meatball spaghetti.What is the most suspected food for food poisoning after cross-tabulation? Use the following table to answer the question. Summary of Survey Responses

10100\begin{array} { | l | l | l | } \hline & \begin{array} { l } \text { Number of people who } \\\text { developed the case definition } \\\text { symptoms }\end{array} & \begin{array} { l } \text { Number of people who ate the } \\\text { food }\end{array} \\\hline \text { Pepperoni pizza only } & 113 & 275 \\\hline \text { Meatball spaghetti only } & 62 & 375 \\\hline \begin{array} { l } \text { Both pepperoni pizza and } \\\text { meatball spaghetti }\end{array} & 57 & 150 \\\hline \begin{array} { l } \text { Neither of pepperoni pizza or } \\\text { meatball spaghetti }\end{array} & 10 & 100 \\\hline\end{array}

A) Pepperoni pizza only
B) Meatball spaghetti only
C) Both pepperoni pizza and meatball spaghetti
D) Neither pepperoni pizza nor meatball spaghetti
E) We cannot determine the cause of food based on this information

Zybrea Knight · Accepted Answer

Final Answer : A, Explanation :  The attack rate for each food item can be calculated to determine the most suspected food. For pepperoni pizza only, the attack rate is 113/275 = 41.1%. For meatball spaghetti only, the attack rate is 62/375 = 16.5%. For both foods, it's not directly relevant since we're comparing individual foods. The higher attack rate for pepperoni pizza indicates it is the most suspected food for food poisoning.

Definitions

Learning Objectives

Learning Objectives

Related questions