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the cause and spread of infection control

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The Cause and Spread of Infection P1 & P2 Kathryn Munnis Define: Infection: The process by which a disease is transmitted by micro organisms from one person Another. Colonisation: The process in biology by which a species spreads into new areas. The presence of bacteria on a body surface (skin, mouth, intestines, airways) without causing disease to the person. Systemic infection: An infection where the pathogen is distributed throughout the body instead of concentrated in one area. Localised infection: An infection where it is limited to one area or specific part of the body and has local symptoms. Define: Pathogen: A disease causing organism. Commensal: This is where an organism derives food from another organism. It does not harm or help it. Normal flora: This is the mixture of bacteria normally found on body sites. Transient flora: Micro-organisms that colonise people for days or even weeks but do not establish themselves. Schematic diagram of the 'chain of infection': The Major Pathogens: provide a brief description of their key features. Viruses A microscopic organism, it is smaller than a bacteria and it must have a living host. ...read more.


Produce a diagram to show modes of transmission of pathogens Produce a diagram to show modes of entry into the body of pathogens. Name Infection Causative Pathogen June Streptococcus B Bacterium Two children Ring worm fungus Patients with catheters Pseudomonas Bacterium- Pseudomonas aeruginosa Underweight woman Tuberculosis Bacterium- Mycobacterium Tuberculosis Molly Infectious Mononucleosis Epstein- Barr virus (which is the human herpes virus) James Tetanus Bacterium- Clostridium tetani Jack Measles Virus Emily Scabies Parasite Mr Henderson MRSA Bacterium Name of case infection Causative Pathogen Milly Head lice Ecto-parasite Simone Chlamydia Bacterium called Chlamydia trachomatis Iona Impetigo Bacterium- Streptococcus pyogenes Abi Candida Albicans Fungus Peter Helicobacter Pylori Bacterium Sam Thread worms Enterobius vermicular Parasite Agnes Humanpapillomavirus Virus Mike Swine Flu Virus Andy Malaria Parasite (germ) called plasmodium Contaminated water Cryptosporidiosis Parasite- protozoa Describe how a named viral infection may be spread: Swine Flu * Like most viruses, it enters the body through the mucous membranes - the eyes, the nose or the mouth. * Swine flu is spread just like the regular seasonal flu spreads. * It goes from person to person through close contact and direct touch, indirect touch, or respiratory droplets carrying the virus from person to person or from person to environmental surfaces through coughs and sneezes. ...read more.


* People who are more prone to MRSA are those who are very ill or have wounds or open sores (for example bed-sores or burns). * MRSA spreads from person to person usually by direct skin-to-skin contact. * MRSA is usually caught from hospitals. * Spread may also occur by touching sheets, towels, clothes, dressings, etc, which have been used by someone who has MRSA. * Describe how a named fungal infection may be spread: Ring Worm * Ringworm is spread if an infected person or animal touches you. * It can also be spread if you touch something that the infected person or animal has had contact with. * Cats are the more likely animal to carry and transmit ringworm. * People can get Ringworm from: 1) direct skin-to-skin contact with an infected person or pet, 2) indirect contact with an object or surface that an infected person or pet has touched, or 3) rarely, by contact with soil. * It most commonly appears on the scalp, the groin area and the feet, although it can affect any part of the body. * Ring worm is frequently spread through the shared use of personal items, particularly in damp or humid environments. ...read more.

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