Common Factors Contributing to Food Poisoning

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Common Factors Contributing to Food Poisoning

Food poisoning can be defined as:

“An acute (arising suddenly and of short duration) gastroenteritis

caused by the ingestion of food.” – www.food.gov.uk

Food poisoning is characterized by the following symptoms:

· Abdominal Pain

· Diarrhoea

· With or without vomiting

· With or without fever

Major problems with food poisoning occur in the very young, the very

elderly and those with otherwise reduced immunological defences. The

major problem is with dehydration and loss of electrolytes and is a

main cause of infant and child mortality in the developing world.

Some authors exclude food-borne illness that are caused by primary

human pathogens (that are adapted to the human host) from their

definition of food poisoning, examples include Salmonella Typhoid and

Dysentery caused by Shigella Dysenteriae. The term ‘food poisoning’ is

reserved for those diseases produced by bacterial exotoxins, for

example this would include Staphylococcus Aureus and Clostridium

Perfringens but would exclude Salmonella. – (Garbutt 1997)

Campylobacter Jejuni is the most common cause of food poisoning. It

is a gram-negative organism with an incubation period commonly of 3-5

days.

Contamination

Live tissue in animals is essentially sterile with but it is during

food preparation that it can become contaminated at any stage of the

process. The most critical stages are skinning and evisceration as it

is the hide and the intestines that contain the animal’s micro-flora

along with organisms present in faeces and soil. Abattoir hygiene

must be kept to a very high ...

... middle of paper ...

...emain infected for weeks, sometimes months.

Pests

Pests such as flies, cockroaches, mice, rats and birds all carry food

poisoning organism. Careful effort must be made to ensure any food

storage or preparation area is pest free. Methods of prevention can

include rodent traps and UV fly killers. Salmonella is naturally

found in the intestine of most animals, domestic or wild, including

mammals, birds and insects. It is excreted in large numbers in faeces

and can remain viable for years within the faecal material.

Bibliography

Essentials of Food Microbiology

John Garbutt, Arnold (1997)

Human Nutrition – A Health Perspective

Mary. E. Barasi 2003 – Arnold (2003)

Human Nutrition and Dietetics

Garrow, James & Ralph – Churchill Livingstone (2004)

www.food.gov.uk

www.bromley.gov.uk

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