Food Poisoning

This Week’s Objectives:

1. Identify the most common causes for food

poisoning

2. Identify and describe the most common bacteria involved in food poisoning

3. Discuss how bacteria causes food poisoning

4. Describe the ways to prevent food poisoning

What do you already know?

The next few slides are designed to be a self-quiz. These questions in no way affect your grade; however will be useful for you to determine your current knowledge on

this week’s lecture topic.

Question 1Which of the following is a cause for

food poisoning?

Heating food above the specified cooking temperature

Heating food at the specified cooking temperature

Heating food below the specified cooking temperature

A and C

Question 2Which of the following is a bacteria that

causes food poisoning?

Aeromonas hydrophila

Campylobacter jejuni

Salmonella serotype Enteritidis

All of the above

Question 3Which of the following symptoms is

associated with infection with C. jejuni ?

Vomiting

Skin rash

Diarrhea

All of the above

Question 4Which of the following foods can cause

food poisoning?

Sprouts

Beef

Chicken

None of the above

Why does food poisoning occur?

• Mishandling of food- poor sanitation• Not cooking food thoroughly- poor preparation• Improper storage of food

Which bacterium are common in food poisoning cases?

• Salmonella• E. Coli• Campylobacter• Listeria

Salmonella

E. coli Campylobacter Listeria

Example: Salmonella

• Infection: Salmonellosis• Symptoms: fever, diarrhea, abdominal cramps• Number of cases per year: ~42,000 in the U.S.• Common serotypes: Typhimurium and Enteritidis• Common foods: eggs, beef, milk, pork, sprouts• Typical Cause: Raw/undercooked food item

What happens in your body?• You consume contaminated food• Bacteria passes through the stomach

into the intestines• Attaches to intestinal wall and

multiplies• Then either:• Stays attached• Travels to other body tissues• Produces a toxin that goes into your

bloodstream• The route the bacteria takes correlates

to the symptoms a person would have.

E. coli

How do you prevent it?

What are the next steps for this week?

• Complete the required reading

• Check out the additional information/resources subpage

• Complete the quiz (found in assignments subpage)

• Read carefully this week’s main assignment (found in assignments subpage)

• Complete group wiki assignment

• Post any questions you may have in the help section!