• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Describe the cause of infection- infection prevention and control

Extracts from this document...


P1- Describe the cause of infection Infection is caused by micro-organisms which are everywhere i.e. skin, air, dust, water. They normally occur when body tissues are invaded by an infectious agent, such as micro-organisms (organisms that can only be seen through a microscope)for example, bacteria, viruses and fungi) and parasitic organisms (such as lice and mites). Pathogens are also a kind of infectious agent that are capable of causing disease and the toxins that they produce cause the signs and symptoms that we associate with and infectious illness for example headache, vomiting, feeling faint. (Michie.V, Baker.L, 2008). Pathogenic organisms are a type of organisms that can cause human diseases. They vary in size and type. They types that I am going to be talking about are; bacterial, viral, fungi and parasitic organisms. Non- pathogenic organisms are also called normal floras. They are a type of micro-organisms offer protection for the body and they do not cause any harm. The main role of the normal floras is to prevent pathogens (organisms that cause disease) ...read more.


Viruses differ from bacteria, because in order for a virus to cause a disease, they have to enter a living 'host' cell, whereas in bacteria only need to multiply until there is a reasonable amount to cause a disease. The virus changes the genetic coding of the host by releasing its DNA (deoxyribonucleic acid) or its RNA (ribonucleic acid). This eventually causes the viral coding to separate from the host cells and reproduce in other cells, the host then dies and the new virus is then released to find more host cells. A virus also does not have any metabolic activity therefore they cannot produce any waste. (P.Ayling,2007) Mumps is an example of a localised virus (commonly a paramyxovirus) that causes swelling and tenderness of the salivary glands. It is transmitted through airborne contaminated droplets from coughs and sneezes of those who are infected. It can leave a person contagious for approximately five days and it usually affects children between the ages if 5 and 14 but in some cases it can also affect adults. ...read more.


They are not thought to transmit any serious illness to humans however they can cause severe irritation and a feeling of discomfort. Hygiene is essential if you want to get rid of them. (Ayling.P, 2007) (Michie.V, Baker.L, 2008). Normal floras are micro-organisms which provide protection for the body and do it no harm. There presence is very important in prevention pathogens from colonizing the skin or the intestines. This is because the pathogens prefer to grow where there are no other organisms to compete with. Transient floras are organisms that easily transferable to another person or surface, for example by salmonella found on raw meat, can remain on the hands for a long period of time, which increases the risk of cross-contamination. (Ayling.P, 2007) There are different stages by which transient floras succeed in causing infection are termed the chain of infection. The main purpose for this chain is to show how pathogens move from one host to the next. This chain has to broken in order to prevent. (Ayling.P, 2007) Below is a diagram of the chain of infection; ( http://faculty.ccc.edu/tr-infectioncontrol/images/chain.jpg) ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Healthcare section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Healthcare essays

  1. Communicable and Non-Communicable Disease: Tuberculosis and Cystic Fibrosis

    Hospital of North Staffordshire, located in Stoke-on-Trent, which limits the range of choice available for service users with restrictive circumstances, such as lack of access to private or public transport. The reason for this scarcity in clinical support around the UK is the relatively low incidence of the disease in this country in comparison with global figures.

  2. the cause and spread of infection control

    E.g. BSE, attacks the nervous system, and is not easy to kill. Define characteristics of micro-organisms: Pathogenicity: The ability of a pathogen to produce an infectious disease in an Organism. Virulence: The degree of damage cause by a pathogen. Opportunistic: A bacteria, virus or fugus that takes advantage of opportunities to cause disease.

  1. Malaria - infection and cure

    The temperature also rises rapidly up to 41oC. 2- The 'hot stage' this phase coincides with schizont rupture. The patient feels intensely hot. The increase in temperature (to 41oC) may lead to hyperthermic brain damage as well as causing delirium.

  2. Strageties for prevention of disease

    Randomised controlled trials are underway in this are to see if decreased long-term mortality can be directly observed from CT screening. Screening studies have only been done in high risk populations, such as smokers and workers with occupational exposure to certain substances.

  1. Medical Waste Incineration

    CAA requires states to submit a plan to EPA for approval, outlining standards of performance at least as stringent as the federal guidelines in order to be approved by EPA. An approved state plan is managed by the respective state EPA or the Department of Health (DOH).

  2. Pneumonia is a serious infection or inflammation of your lungs.

    the rib cage or between ribs draw inward with each breath), Vomiting, Chest pain, Abdominal pain, Decreased activity Loss of appetite (in older children) or poor feeding (in infants), In extreme cases, bluish or grey colour of the lips and fingernails.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work