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 a few examples of these are thrush, ringworm and athlete's foot and finally parasite infestations like scabies, lice, head lice, fleas, threadworm and roundworm. 1.3 Infection is Microorganisms transmitted to host's cells, tissues or body cavities they might but do not always cause illness. Infectious diseases are transmissible from one individual to another. Colonisation means to cause infection organisms colonise cells and tissues and compete with normal micro-flora in order to multiply to a level which causes harm. Finally non- pathogenic microorganisms colonise the skin, oral cavity, colon to form the normal micro-flora; they do not normally cause disease and may be beneficial. 1.4 Systemic infection affects whole system of the body, whereas localised infection affects a specific area of the body. 1.5 Poor practices that may lead to the spread of infection includes poor personal hygiene, failure to wear the correct PPE, inadequate cleaning, poor hand washing, re-use of un-sterilized equipment and failure to follow procedure. 2. Understand the transmission of infection
2.1 Conditions needed for the growth of micro-organisms are optimum temperature, moisture, nutrients, gases and time. 2.2 Ways an infective agent might enter the body can be Entry/ exit routes including: nose by inhalation, mouth by ingestion, rectum, urinary tract, eyes, broken skin, unbroken skin, genital tract, body fluids route and blood by inoculation. 2.3 Common...
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