Background: Common foodborne viruses include norovirus and hepatitis A virus. Norovirus, which causes inflammation of the stomach and intestines, has been a recent issue on cruise ships, infecting hundreds of passengers and crew on certain voyages. Hepatitis A causes inflammation of the liver, which is treated with rest and diet changes. Parasites are tiny organisms that live inside another organism. Giardia is a parasite spread through water contaminated with the stools of people or animals who are infected. Food preparers who are infected with parasites can also contaminate food if they do not thoroughly wash their hands after using the bathroom and before handling food. Trichinella is a type of roundworm parasite. People may be infected with this parasite by consuming raw or undercooked pork or wild game.

Situation: Two brothers had very bad luck when they attended a wedding. Tom fell violently ill after eating some tainted food, and he was rushed to the hospital. His brother Rob felt sick later, after eating the main course. Tom was infected with norovirus and hepatitis A, while Rob was infected with Giardia and Trichinella.

Question: Which brother experienced more inflammation of the liver?
Answer: Tom

Situation: Two brothers had very bad luck when they attended a wedding. Tom fell violently ill after eating some tainted food, and he was rushed to the hospital. His brother Rob felt sick later, after eating the main course. Tom was infected with norovirus and hepatitis A, while Rob was infected with Giardia and Trichinella.

Question: Which brother experienced less inflammation of the liver?
Answer: Rob

Situation: Two brothers had very bad luck when they attended a wedding. Tom fell violently ill after eating some tainted food, and he was rushed to the hospital. His brother Rob felt sick later, after eating the main course. Tom was infected with norovirus and hepatitis A, while Rob was infected with Giardia and Trichinella.

Question: Which brother experienced less inflammation of the stomach?
Answer: Rob

Situation: Two brothers had very bad luck when they attended a wedding. Tom fell violently ill after eating some tainted food, and he was rushed to the hospital. His brother Rob felt sick later, after eating the main course. Tom was infected with norovirus and hepatitis A, while Rob was infected with Giardia and Trichinella.

Question: Which brother experienced more inflammation of the stomach?
Answer: Tom

Situation: Two brothers had very bad luck when they attended a wedding. Tom fell violently ill after eating some tainted food, and he was rushed to the hospital. His brother Rob felt sick later, after eating the main course. Tom was infected with norovirus and hepatitis A, while Rob was infected with Giardia and Trichinella.

Question: Which brother got a type of roundworm parasite?
Answer: Rob

Situation: Two brothers had very bad luck when they attended a wedding. Tom fell violently ill after eating some tainted food, and he was rushed to the hospital. His brother Rob felt sick later, after eating the main course. Tom was infected with norovirus and hepatitis A, while Rob was infected with Giardia and Trichinella.

Question: Which brother didn't get a type of roundworm parasite?
Answer: Tom

Situation: Two brothers had very bad luck when they attended a wedding. Tom fell violently ill after eating some tainted food, and he was rushed to the hospital. His brother Rob felt sick later, after eating the main course. Tom was infected with norovirus and hepatitis A, while Rob was infected with Giardia and Trichinella.

Question: Which brother was infected by food preparers who didn't wash their hands?
Answer: Rob

Situation: Two brothers had very bad luck when they attended a wedding. Tom fell violently ill after eating some tainted food, and he was rushed to the hospital. His brother Rob felt sick later, after eating the main course. Tom was infected with norovirus and hepatitis A, while Rob was infected with Giardia and Trichinella.

Question: Which brother was not infected by food preparers who didn't wash their hands?
Answer: Tom

Situation: Two brothers had very bad luck when they attended a wedding. Tom fell violently ill after eating some tainted food, and he was rushed to the hospital. His brother Rob felt sick later, after eating the main course. Tom was infected with norovirus and hepatitis A, while Rob was infected with Giardia and Trichinella.

Question: Which brother was not infected by consuming undercooked pork?
Answer: Tom

Situation: Two brothers had very bad luck when they attended a wedding. Tom fell violently ill after eating some tainted food, and he was rushed to the hospital. His brother Rob felt sick later, after eating the main course. Tom was infected with norovirus and hepatitis A, while Rob was infected with Giardia and Trichinella.

Question: Which brother was infected by consuming undercooked pork?
Answer: Rob

Situation: Mark and Ken were taking a lunch break. Mark bought some fast-food from a major chain, while Ken ate an egg salad and pork he got from his aunt. Mark got norovirus and hepatitis A virus. Ken got sick because he got infected with Giardia and trichinella.

Question: Which person will experience and inflammation of the stomach?
Answer: Mark

Situation: Mark and Ken were taking a lunch break. Mark bought some fast-food from a major chain, while Ken ate an egg salad and pork he got from his aunt. Mark got norovirus and hepatitis A virus. Ken got sick because he got infected with Giardia and trichinella.

Question: Which person will not experience and inflammation of the stomach?
Answer: Ken

Situation: Mark and Ken were taking a lunch break. Mark bought some fast-food from a major chain, while Ken ate an egg salad and pork he got from his aunt. Mark got norovirus and hepatitis A virus. Ken got sick because he got infected with Giardia and trichinella.

Question: Which person will not experience and inflammation of the intestines?
Answer: Ken

Situation: Mark and Ken were taking a lunch break. Mark bought some fast-food from a major chain, while Ken ate an egg salad and pork he got from his aunt. Mark got norovirus and hepatitis A virus. Ken got sick because he got infected with Giardia and trichinella.

Question: Which person will experience and inflammation of the intestines?
Answer: Mark

Situation: Mark and Ken were taking a lunch break. Mark bought some fast-food from a major chain, while Ken ate an egg salad and pork he got from his aunt. Mark got norovirus and hepatitis A virus. Ken got sick because he got infected with Giardia and trichinella.

Question: Which person will experience and inflammation of the liver?
Answer: Mark

Situation: Mark and Ken were taking a lunch break. Mark bought some fast-food from a major chain, while Ken ate an egg salad and pork he got from his aunt. Mark got norovirus and hepatitis A virus. Ken got sick because he got infected with Giardia and trichinella.

Question: Which person will not experience and inflammation of the liver?
Answer: Ken

Situation: Mark and Ken were taking a lunch break. Mark bought some fast-food from a major chain, while Ken ate an egg salad and pork he got from his aunt. Mark got norovirus and hepatitis A virus. Ken got sick because he got infected with Giardia and trichinella.

Question: Which person will be treated with rest?
Answer: Mark

Situation: Mark and Ken were taking a lunch break. Mark bought some fast-food from a major chain, while Ken ate an egg salad and pork he got from his aunt. Mark got norovirus and hepatitis A virus. Ken got sick because he got infected with Giardia and trichinella.

Question: Which person will not be treated with rest?
Answer: Ken

Situation: Mark and Ken were taking a lunch break. Mark bought some fast-food from a major chain, while Ken ate an egg salad and pork he got from his aunt. Mark got norovirus and hepatitis A virus. Ken got sick because he got infected with Giardia and trichinella.

Question: Which person won't be treated with diet changes?
Answer: Ken

Situation: Mark and Ken were taking a lunch break. Mark bought some fast-food from a major chain, while Ken ate an egg salad and pork he got from his aunt. Mark got norovirus and hepatitis A virus. Ken got sick because he got infected with Giardia and trichinella.

Question: Which person will be treated with diet changes?
Answer: Mark

Situation: Two groups of tourists went on two different cruise ships Group J  had some members contract Norovirus and hepatitis A, while group K got many cases of giardia and trichinella infections.

Question: Which group had more people with inflammation of the stomach?
Answer: Group J

Situation: Two groups of tourists went on two different cruise ships Group J  had some members contract Norovirus and hepatitis A, while group K got many cases of giardia and trichinella infections.

Question: Which group had fewer people with inflammation of the stomach?
Answer: group K

Situation: Two groups of tourists went on two different cruise ships Group J  had some members contract Norovirus and hepatitis A, while group K got many cases of giardia and trichinella infections.

Question: Which group had fewer people with inflammation of the intestines?
Answer: group K

Situation: Two groups of tourists went on two different cruise ships Group J  had some members contract Norovirus and hepatitis A, while group K got many cases of giardia and trichinella infections.

Question: Which group had more people with inflammation of the intestines?
Answer: Group J

Situation: Two groups of tourists went on two different cruise ships Group J  had some members contract Norovirus and hepatitis A, while group K got many cases of giardia and trichinella infections.

Question: Which group had more people with inflammation of the liver?
Answer: Group J

Situation: Two groups of tourists went on two different cruise ships Group J  had some members contract Norovirus and hepatitis A, while group K got many cases of giardia and trichinella infections.

Question: Which group had fewer people with inflammation of the liver?
Answer: group K

Situation: Two groups of tourists went on two different cruise ships Group J  had some members contract Norovirus and hepatitis A, while group K got many cases of giardia and trichinella infections.

Question: Which group had fewer people with roundworm parasites?
Answer: Group J

Situation: Two groups of tourists went on two different cruise ships Group J  had some members contract Norovirus and hepatitis A, while group K got many cases of giardia and trichinella infections.

Question: Which group had more people with roundworm parasites?
Answer: group K

Situation: Two groups of tourists went on two different cruise ships Group J  had some members contract Norovirus and hepatitis A, while group K got many cases of giardia and trichinella infections.

Question: Which group had people treated with rest and diet changes?
Answer: Group J

Situation: Two groups of tourists went on two different cruise ships Group J  had some members contract Norovirus and hepatitis A, while group K got many cases of giardia and trichinella infections.

Question: Which group didn't have people treated with rest and diet changes?
Answer: group K

Situation: Two sisters attended a wedding. Ann got very sick early on, after eating the appetizer. She was infected with norovirus and with hepatitis A. Bianca danced for a while then ate the main course and fell ill. She found out she was infected with Giardia and trichinella.

Question: Which sister had an inflammation of the stomach?
Answer: Ann

Situation: Two sisters attended a wedding. Ann got very sick early on, after eating the appetizer. She was infected with norovirus and with hepatitis A. Bianca danced for a while then ate the main course and fell ill. She found out she was infected with Giardia and trichinella.

Question: Which sister didn't have an inflammation of the stomach?
Answer: Bianca

Situation: Two sisters attended a wedding. Ann got very sick early on, after eating the appetizer. She was infected with norovirus and with hepatitis A. Bianca danced for a while then ate the main course and fell ill. She found out she was infected with Giardia and trichinella.

Question: Which sister didn't have an inflammation of the intestines?
Answer: Bianca

Situation: Two sisters attended a wedding. Ann got very sick early on, after eating the appetizer. She was infected with norovirus and with hepatitis A. Bianca danced for a while then ate the main course and fell ill. She found out she was infected with Giardia and trichinella.

Question: Which sister had an inflammation of the intestines?
Answer: Ann

Situation: Two sisters attended a wedding. Ann got very sick early on, after eating the appetizer. She was infected with norovirus and with hepatitis A. Bianca danced for a while then ate the main course and fell ill. She found out she was infected with Giardia and trichinella.

Question: Which sister had an inflammation of the liver?
Answer: Ann

Situation: Two sisters attended a wedding. Ann got very sick early on, after eating the appetizer. She was infected with norovirus and with hepatitis A. Bianca danced for a while then ate the main course and fell ill. She found out she was infected with Giardia and trichinella.

Question: Which sister didn't have an inflammation of the liver?
Answer: Bianca

Situation: Two sisters attended a wedding. Ann got very sick early on, after eating the appetizer. She was infected with norovirus and with hepatitis A. Bianca danced for a while then ate the main course and fell ill. She found out she was infected with Giardia and trichinella.

Question: Which sister didn't have parasites?
Answer: Ann

Situation: Two sisters attended a wedding. Ann got very sick early on, after eating the appetizer. She was infected with norovirus and with hepatitis A. Bianca danced for a while then ate the main course and fell ill. She found out she was infected with Giardia and trichinella.

Question: Which sister had parasites?
Answer: Bianca

Situation: Two sisters attended a wedding. Ann got very sick early on, after eating the appetizer. She was infected with norovirus and with hepatitis A. Bianca danced for a while then ate the main course and fell ill. She found out she was infected with Giardia and trichinella.

Question: Which sister had a type of roundworm?
Answer: Bianca

Situation: Two sisters attended a wedding. Ann got very sick early on, after eating the appetizer. She was infected with norovirus and with hepatitis A. Bianca danced for a while then ate the main course and fell ill. She found out she was infected with Giardia and trichinella.

Question: Which sister didn't have a type of roundworm?
Answer: Ann