Download Food Born Illness - World of Teaching

Food Born Illness
YOU could be next!!
What is food born illness?
A. Illness resulting from eating food
contaminated w/ a bacteria or virus.
B. May cause outbreaks where many
people become sick, with the same
illness at the same time. (about 10% of a
population)
1. Usually contaminated food comes
from a location away from home
(restaurant, baseball game etc.).
Epidemiology
 The tracking of outbreaks of
illness (not always food illness) to
discover where the original source
of contamination came from.
 Why?
 To PREVENT it from happening
again!
Salmonella
A. Bacteria
3. Found in
1. Many types live undercooked
in poultry & swine
meats,
eggs
(birds & pigs)
2. Can be found in a. 1 in every 3 eggs is
contaminated!
environment
b. Illness can be
a. water
avoided if eggs are
b. soil
cooked properly.
c. insects
d. animal feces
3 Conditions BAC need to live
1. Warmth
2. Moisture
3. Nutrients
2 factors that kill BAC!
1. Extreme heat (this is BEST!)
2. Extreme cold
Pasteurization - a heat treatment
used to kill bacteria. (commonly
used with milk & juice)
Symptoms
1.
2.
3.
4.
5.
6.
Nausea
Vomiting
Stomach cramps
Diarrhea
Fever
Headache
• CAN be fatal - RARE!
After Ingestion of bacteria
1. Will be sick within 6-72 hours after
eating contaminated food. (NOT
usually sick immediately after
eating!)
2. Symptoms usually last 4-7 days
3. Most recover without antibiotics
4. Diarrhea can be severe enough to
hospitalize person (dehydration)
E. coli
A. Bacteria that
3.
Found
in
produces a
undercooked ground
powerful toxin &
beef & noncan cause severe pasteurized milk.
illness.
A. Meat can become
1. Most strains
contaminated during
cattle slaughter.
harmless
B. Bacteria on cow’s
2. Live in
udders or on
intestines of
equipment
can
get
healthy humans &
into
milk.
animals.
IMPORTANT vocabulary!
Cross Contamination
- moving bacteria
Host - original
from one source to
source of
another.
contamination.
Vector - responsible
party (object,
machine) that
actually carries the
bacteria from
source to source.
Symptoms
1. All the same
symptoms as
Salmonella.
2. PLUS you CAN
have….bloody
diarrhea!
In children under
5 years old & in
the elderly it can
cause kidney
failure, & destroy
red blood cells RARE, only 27% of cases.
After Ingestion of E.coli
1. Illness usually lasts 5-10 days
2. Most people recover w/out antibiotics
3. Should NOT use anti-diarrhea
medications.
WHY?
- keeps BAC in body & allows BAC to
grow in warm, moist, conditions (& the
BAC has lots of nutrients!) so it
GROWS!
Prevention
1. Cook all meat well
Keep raw meats
a. Use meat
separate from readythermometer
to-eat foods (salads,
b. Thickest part of
breads etc.)
meat should be 3. Wash hands, counter
- 160° - beef
& utensils with hot,
- 170° - poultry
soapy water after
c. If you don’t have a
touching raw meat.
meat thermometer,
4.
Never place cooked
cut into center of
meat on the same
meat & make sure it
plate that held raw
is NOT pink!
meat.
2.
Prevention (continued)
5. Drink only
pasteurized milk
and juice.
- Products that
have been
pasteurized…
a. Will say
“pasteurized” on
the label
b. May be sold at
room temperature
6. Wash fruits &
vegetables well
(dry with paper
towel).
7. Wash hands after
using restroom or
changing diapers
to reduce risk of
spreading
infection.
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