Pathogenic Organisms

Pathogenic Organisms, Sources, Incubation Period, Symptoms. 

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  • Created by: Nathan
  • Created on: 15-01-13 10:03

Infective Food Poisoning - Definition

This is more correctly known as food infection. This is caused by live pathogenic micro-organisms consumed in large quantities to cause illness.

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Toxic Food Poisioning - Definition

Toxic Food Poision happens when a bacteria produces toxins/poisions which is harmful for your body. This will then make you ill. 

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Infective Food Poisoning 

Source and Causes: Raw or inadequately cooked meat, milk, eggs, poultry. Carried by animals.

Incubation Period: 6-72 hours but usually 12-30 hours.

Duration: 1-8 Days

Symptoms: Abdominal Pain, Diarrhoea, Vomiting, Headache and fever. 

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E-Coli 0157

Infective Food Poisoning 

Source and Causes:  Intestines of Animals and humans. Animal ad Human Waste. (Lack of hand washing)

Incubation Period: 12-24 Hours

Duration: 1-5 Days

Symptoms: Abdominal Cramps, Vomiting, diarrhoea and bleeding of the bowel. 

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Staphylococcus Aureus

Infective Food Poisoning 

Source and Causes: Carried by humans in the nise and throat. A causes could be as simple as a sneeze or cough on to a food product consumed by someone else.

Incubation Period: 2-6 hours.

Duration: 6-24 hours.

Symptoms: Severe Vomiting, Stomach Cramps, Diarrhoea and Collapse. 

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Listeria monocytogens

Infective Food Poisoning 

Source and Causes: Pre-Cooked Chilled foods. Untreated dairy products (such as unpasturized cheese and milk). 

Incubation Period: 1-70 Days.

Duration: Several Days

Symptoms: influenza like illness, fever, diarrhoea, septicaemi, meningitis and abortion (Miscarriage).

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Infective Food Poisoning 

Source and Causes: Raw or Inadaquately cooked foods of animal origin. Untreated Milk. Most common problem in raw chicken. 

Incubation Period: 1-10 Days, Usually 2-5 Days.

Duration: 2-3 Days. 

Symptoms: Headache, fever, diarrhoea, persistent abdominal pain and nausea. (Vomiting is Rare). 

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Bacillus Cereus

Toxic Food Poisoning 

Source and Causes: Cereals, Most common in Rice when re-heated, due to the bacteria creating toxics that aren't destroyable from heat.  

Incubation Period: 1-6 hours.

Duration:  12-24 hours.

Symptoms: Acute nausea, vomiting, abdominal pains and some diarrhoea. 

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Clostridium Perfringens

Toxic Food Poisoning 

Source and Causes: Animal and Human sewage, soil, dust, insects and raw meats.  

Incubation Period: 4-24 hours usually 8-12.

Duration:  12-28 hours.

Symptoms: Acute abdominal pains, diarrhoea, vomiting in rare occasions.  

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Clostridium Botulinum

Toxic Food Poisoning 

Source and Causes: Soil and aquatic sediments, fish , meats and vegetables. Improperly canned low acid or fermented foods. 

Incubation Period: 2 hours - 8 days usually 12-36 hours.

Duration:  12-48 hours.

Symptoms: Difficulties in swallowing talking and breathing, weakness, double vision and vertigo. 

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