Transcript Foods found in

• Bacteria are microscopic organisms found
everywhere- in soil, air, water, the body etc.
• You can’t see, taste or smell most bacteria
• Most bacteria are harmless- some are helpful- like
those that change milk into cheese
• Some bacteria known as pathogens are harmful
and can cause illness and sometimes death
Source:
Waste of man and animals
(esp. poultry)
Salmonella is infectious and
can be spread to other
people
Foods found in:
Contaminated meat and meat
products- especially
poultry
Custard, cream, milk and egg
products
Salads
Symptoms:
Fever, headache, aching limbs, abdominal
pain, nausea, diarrhoea, sometimes vomiting
Onset time:
6-72 hours (usually 12-36 hours)
Source:
Soil, water, vegetation,
domestic animals,
man
Foods found in:
Raw milk, seafood,
vegetables, pate, soft
cheeses, meat
products
Listeria is particularly dangerous for pregnant women (risk of
miscarriage / stillbirth), the elderly, and those with lowered immune
systems
Symptoms:
Normal host- mild fever, influenza type symptoms
At risk host- Fever, intense headache, nausea,
vomiting, infection of feutus, septicemia, meningitis,
still birth
Onset time:
3 days to 3 weeks
Source:
Infected sores,
nasal secretions,
skin, perspiration,
hair
Foods found in:
Contaminated moist
protein foods;
eggs, fish, meat
products
Symptoms:
Abdominal pain, severe vomiting, diarrhoea,
abdominal cramps- sometimes collapse
Onset time:
1 to 6 hours (usually 2-4 hours)
Source:
Large intestine- faeces
Foods found in:
Unwashed vegetables,
undercooked meat,
contaminated water,
raw milk
Symptoms:
Severe abdominal cramps, watery
diarrhoea, bloody diarrhoea, nausea,
vomiting
Onset time:
7 days
Source:
Waste of man and animals
Campylobacter is
infectious and can be
spread to other people
Foods found in:
Contaminated meat and
meat products,
especially poultry
Contaminated water, raw
milk
Symptoms:
Diarrhoea, abdominal pain, fever, nausea,
vomiting
Onset time:
1 to 10 days (usually 3-5 days)
Source:
Outer casing of rice,
environment, animals
Foods found in:
Milk, meats, vegetables,
rice, sauces,
puddings, soups
There are 2 types of B. cereus;
Diarrhoeal – causing diarrhoea and Emetic- causing vomiting
The emetic toxin type grows well in rice dises
Symptoms:
Diarrhoeal – nausea, abdominal pains,
watery diarrhoea
Emetic – Nausea and vomiting
Onset time:
Diarrhoeal – 8-16 hours after eating
Emetic – 1-6 hours after eating