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    Home » Virology for Kids » What is a pathogen?

    What is a pathogen?

    January 13, 2022 By Emma Vanstone Leave a Comment

    Pathogens are organisms that cause disease. Viruses, bacteria, protists and fungi are all pathogens. Pathogens cause communicable diseases.

    Diseases can be communicable or non-communicable.

    What is a communicable disease?

    Communicable diseases spread between people. Non-communicable diseases cannot be spread between people. An example of a non-communicable disease is heart disease.

    Examples of viral diseases

    • Ebola virus disease is caused by ebola virus. Ebola is a nasty virus with a high death rate. Outbreaks occur sporadically in Africa.
    Image of the ebola virus
    Ebola virus under microscope
    • Influenza ( flu ) caused by the influenza virus.
    • Chicken Pox also known as varicella and caused by varicella-zoster virus.
    • Covid-19 caused by SARS-CoV-2.
    Coronavirus 3D image
    Coronavirus Covid-19 background – 3d rendering

    Examples of bacterial diseases

    • Cholera is caused by Vibrio cholerae and usually spreads via contaminated water supplies.
    Vibrio cholerae under a microscope
    Vibrio cholerae bacteria
    • Tuberculosis is caused by Mycobacterium tuberculosis. It spreads through the air when an infected person coughs.

    Examples of diseases caused by protists

    Protists are microoganisms which have features that belong to animals, plants and fungi.

    • Malaria is spread by mosquitoes carrying a protist called Plasmodium. In this instance mosquitoes are called a vector. They spread the disease when they suck blood from an infected person and then suck the blood from an uninfected person.
    • African sleeping sickness is caused by a protist called Trypanosoma transmitted by the tsetse fly.

    Both the protists that case Malaria and African Sleeping Sickness are pathogenic parasites.

    Trypanosoma brucei parasites. Cause African sleeping sickness
    Trypanosoma

    Examples of diseases caused by fungi

    • Athletes foot is a common fungal skin infection usually found between the toes.
    • Ringworm is another fungal skin infection which causes a ring shaped itchy rash.

    Pathogen Match Game

    Grab this FREE pathogen match game to reinforce learning about different types of pathogens and the diseases they cause.

    Pathogen matching game for learning about bacteria, viruses, fungi and protists

    Ideas for learning about viruses

    These plasticine virus models are a fun way to learn about virus structure.

    play dough virus models

    Find out why hand washing is so important for preventing the spread of diseases.

    Ideas for learning about bacteria

    Find out how bacteria are different to viruses.

    Discover why food rots and the role bacteria play in decomposition.

    These plasticine bacteria models are great fun too and a hands-on way to learn about the shapes of different bacteria.

    Image of plasticine models of different bacteria. Includes Treponema pallidum, Streptobaccilus moniliformis, Vibrio cholerae, Salmonella typhi and Helicobacter pylori
    Images of a pathogen matching game, viruses over a microscope and cartoon virus and bacteria images

    Last Updated on July 18, 2022 by Emma Vanstone

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    Safety Notice

    Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. Science Sparks assume no liability with regard to injuries or damage to property that may occur as a result of using the information and carrying out the practical activities contained in this resource or in any of the suggested further resources.

    These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. The adult involved is fully responsible for ensuring that the activities are carried out safely.

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