Slides to accompany discussion of chapter 18 of Environmental Health edited by Howard Frumkin.

1. Food Safety

2. Environmental Health
Chapter 18

3. Assignment
Listen to the 2012 Fresh Air interview with Tom
Philpott (link: http://www.npr.org/
2012/06/07/154504565/assessing-consumer-
concerns-about-the-meat-industry).
Then diagram out one or several of the systems
involved. Clearly show the (A) stocks and flows,
(B) causal relationships or (C) other elements
and their interrelations.

4. Foodborne Illness

5. Food Poisoning

6. Nausea
Vomiting
Diarrhea
Abdominal Pain
Headache
Fever
Dehydration

7. Estimates range
from under 10 million
to over 80 million
cases per year.

8. Why such a large range?

9. Underreporting
Pathogens can be transmitted
by people and through water

10. Onset Time

11. “...exact cause of a foodborne illness
is known in less than 20 person of cases.”

12. Outbreaks

13. “...two or more people
experiencing the same illness
as a result of eating contaminated food.”

14. Sources of Contamination

17. Food-Related Hazards

18. Biological
Chemical
Physical

19. Bacteria

20. E. coli
Listeria
Staphylococcus

21. Salmonella
typhimurium

23. Viruses

24. Hepatitis A
Norovirus (stomach flu)

25. Chemicals

26. Heavy Metals
PCBs
Allergens
Toxins
Pesticides