causes and spread of infection

Good Essays
Topics: Bacteria
Unit 20 – Causes and Spread of Infection

1.1 Identify the differences between bacteria, viruses, fungi and parasites.

Bacteria, fungi and parasites are all considered as ‘living’ things,.
Bacteria are single celled microorganisms that can only been seen through a microscope, they collect their nutrition from their surrounding and unlike viruses, they do not need a living host to reproduce.
Viruses are difficult to destroy because they are enclosed in a protein coating. Viruses are disease-producing agents, far smaller than bacteria. Viruses are not considered as living because they are unable to reproduce.
Fungi are placed into the plant category although they are very different from green plants. The basic part of fungus is a hollow tube, which is known as ‘hypha’. Fungi spread by releasing spores into its surroundings.
Parasites are an organism that feeds and is dependent of its host.

1.2 Identify common illnesses and infections caused by bacteria, viruses, fungi and parasites.

Common illnesses and infections caused by bacteria include; Bacterial meningitis, Gonorrhea, Impetigo, Lyme disease, MRSA infection, Scarlet fever, Tuberculosis, Typhoid fever, and Urinary tract infections.
Common illnesses and infections caused by viruses include; AIDS, Chickenpox, Common cold, Hand, foot, and mouth disease, Viral hepatitis, Influenza (Flu), Measles, Mumps, Rabies, Smallpox, Viral meningitis, and Viral pneumonia.
Common illnesses and infections caused by fungi includes; Pneumocystis pneumonia, Fungal meningitis, Candida infection, Ringworm, and Athlete’s foot.
Common illnesses and infections caused by parasites include; Malaria, Scabies, Stomach and gut worms (Threadworm, hookworm), and Hair and body lice (Head and crab lice).

1.3 Describe what is meant by ‘Infection’ and ‘colonization’

Infection means that the body is being invaded by bacteria, viruses and parasites that are not usually there, these are known as microorganisms.

You May Also Find These Documents Helpful

  • Satisfactory Essays

    Unit 008; Causes and spread of infections. Outcome 1. Understand the cause of infection: 1) Identify the differences between bacteria, viruses, fungi and parasites. Bacteria – bacteria are extremely small singular organisms which are found almost everywhere. Viruses – it is a coated genetic material that invades cells and uses the cells apparatus for reproduction. Fungi – it is a multi-celled living organism. Parasites – they are types of living plants and animals that derive benefit…

    • 434 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    ICO2: Causes and spread of infection 1.1 Bactetria are: Bacteria are organisms made up of just one cell. They are capable of multiplying by themselves, as they have the power to divide into different shapes. Their shapes vary, and that’s how they are used to separate them into groups. Usually a few micrometres in length. Bacteria are present in most surroundings on the planet, growing in soil, acidic hot springs, radioactive waste, water, and deep in the Earth's crust, as well as in organic…

    • 973 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Cause and spread of infection 1.1. Identify the differences between bacteria, viruses, fungi and parasites All 4 are different types of pathogens Bacteria is a single celled organism that multiply by themselves. They lives within and on most living and nonliving things. The majority of bacteria’s are harmless and beneficial to the human body but some can cause infectious diseases. A bacterium usually affects one part of the body and doesn’t spread across or through the body. Bacterial infections…

    • 704 Words
    • 3 Pages
    Good Essays
  • Better Essays

    Paige Edwards Unit 4222-265 Causes and spread of infection outcome 1- to understand the causes of infections identify the differences between bacteria, viruses, fungi and parasites. 1) Bacteria is a organism that is present in most habitats, as well as human bodies and other living organisms such as plants and animals. Bacteria multiplies by its self to progress and spread. Unlike other infections such as viruses, fungi or parasites bacteria is not always harmful in fact in many cases…

    • 1674 Words
    • 7 Pages
    Better Essays
  • Satisfactory Essays

    human body but some can cause infectious diseases. A bacterium usually affects one part of the body and doesn’t spread across or through the body. Bacterial infections are normally treated with a cause of antibiotics Viruses are made up of genes and proteins that spread throughout the body by invading the body’s own cells so they can reproduce and multiply in the body. They use the body’s cells as a host because they are unable to multiply on their own. They are normally spread directly from human…

    • 376 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    KELLY STREET Unit 4222-265 Causes and Spread of Infection Outcome 1 1.1 Bacteria are single cell organisms that cause infections, there are both good bacteria for example which lives in the gut , helping break down nutrients for the bodies needs as well as bad bacteria which can cause infections. They can produce toxins which are poisonous, and in optimum circumstances can multiply every 10-20 minutes via binary fission, so potentially millions can be produced within a short space of time if…

    • 362 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    UNIT 4222-265 Causes and Spread of infection (ICO2) 1) Infections are the result of the body’s inability to fight off microorganisms that can cause damage or disease if they are left untreated. They can be viral or bacterial in nature and might be caused by a fungus or parasite. There are many common types and there are some rare ones which all have varying causes and treatments. Common bacterial infections include strep throat, urinary tract infections and E. coli; the different types are caused…

    • 1260 Words
    • 6 Pages
    Good Essays
  • Good Essays

    Unit 4222 - 265 Causes and spread of infection Outcome 1 - Understand the causes of infection 1 - Identify the differences between bacteria, viruses, fungi and parasites Bacteria - Bacteria are organisms made up of just 1 cell. They are capable of multiplying by themselves, as they have the power to divide. Bacteria exist everywhere, inside and on our bodies. Most of them are completely harmless and some of them are very useful. But some bacteria can cause diseases, either because they…

    • 1172 Words
    • 5 Pages
    Good Essays
  • Powerful Essays

    ESSEX HEALTH PROTECTION UNIT Part of the INFECTION CONTROL GUIDELINES CARE HOMES Issued January 2004 Revised April 2006 and December 2007 2 ESSEX HEALTH PROTECTION UNIT INFECTION CONTROL GUIDELINES FOR CARE HOMES SECTION B – INFECTION, ITS CAUSES AND SPREAD 1. The Causes of Infection An understanding of commonly encountered mi cro-organisms is essential for good infection control practice. Micro-organism s that cause disease are referred to as pathogenic organisms.…

    • 3876 Words
    • 16 Pages
    Powerful Essays
  • Satisfactory Essays

    Causes and spread of infection. 1. Understand the causes of infection. 1.1 You need to understand the differences between bacteria, viruses, fungi and parasites; this also covers cell structure and growth pathogens. 1.2 Common illnesses and infections include bacteria for example tuberculosis, MRSA, tetanus, gangrene, Legionnaires ‘disease, salmonella and conjunctivitis. Viruses like winter vomiting disease, measles, mumps, chickenpox, HIV, Hepatitis B, warts and influenza. Fungal infections…

    • 406 Words
    • 2 Pages
    Satisfactory Essays