Lecture 2
No description yet. This curated deck is ready for daily study.
Card preview (24)
What are the 2 classifications of food borne diseases?
Food Infection Food intoxication
what is the different between food infection and intoxication?
Infection: Microorganisms are carried from food to host -Few hours to few days for bacteria to cause problems Food Intoxications: Toxin production in the food • Faster reaction time • Couple hours before oyu see symptoms • Consume a large amount of bacteria
What are the bacterias that cause a food infection?
Salmonella bacteria Ecoli Clostridia perfringens Listeria monocytogenees Campylobacter jejuni Shigella dysenteeriae
What causes salmonellosis and what are the sources?
Caused by Salmonella bacteria Sources: Human Carrier, [5% of people who get salmonellosis continue to carry it out] Chicken (If chicekn is contaminated eggs is contaminated) Eggs Meat Fruit and Veg
To produce salmonellosis symptoms, how much of the bacteria is necessary?
Large number (10^6 CFU/g) necessary to produce symptoms
What is the incubation period and symptoms of salmonellosis?
Incubation period = 7 – 72 hr Symptoms: Nausea, Abdominal Pain, Diarrhea, Vomiting
How do you get rid of salmonella?
Proper cooking you can get rid of bacteria cause its heat sensitive
Can salmonella bacteria grow with or without O2?
Yes, can grow with either
What are the sources, incubation period and symptoms of E coli?
Food Sources (under cooked meat, raw milk, etc.) Incubation Period: 3-4 days and last up to 10 d. Symptoms: Cramp, Vomiting, Diarrhea, Kidney Failure -enteric disease
How do you get rid of E.coli?
Its heat sensitive so cook it
What is an incubation period?
Time between ingestiong and until you show signs and symptoms
What is the other name for E coli?
Hamburger bacteria
How is E coli transported?
Person to Person, Food to Person Most outbreaks are associated with Restaurant, catered events, health care institutions
Why don’t we know the fool magnitude of E coli?
We don’t know the true magnitude because the reporting system is based on infected individuals seeking medical attention.
What temp should ground beef be cooked too?
68.3C
How can you prevent E coli poisoning?
Proper cooking and preventing cross contamination from raw foods and food handlers.
What are the sources, incubation and symptoms of Clostridia perfringens?
Common in cooked foods (beef, gravy, stew, casseroles, dressings, etc.) Incubation period: 9-15 hrs. Symptoms : Diarrhea Gas -affects GI track
What is the origin of Clostridia perfringens?
Origin: Animal/Human Waste, Sewage, Dust, Soil
Is Clostridia perfringens anaerobic, and vegetative or spores?
Anaerobic Vegetative Cells or Spores -Spore: when conditions aren’t good, they go into a dormant stage with a protective coating -Veg: acting and prodicing cells
What are the sources, incubation period and symptoms of Listeria monocytogenes?
Dairy Incubation Period: 12 hrs Symptoms: Fever Nausea Vomiting Fatigue
What is special about listeria bacteria?
Opportunistic bacteria: Affects people that are already compromised or have lower immune systems already like children and elderly
What does listeria causes?
Listeriosis
Can listeria grow at fridge temps?
Yes
Can listeria cause death?
Yes