CU254 Causes and spread of infection. 1.1/2 Bacteria There are 3 types of Bacteria cocci, bacilli or vibrio, and spirilla or spirochetes. Bacteria is found in everything the only place they aren’t found is where humans have sterilised. They can cause illnesses like tuberculosis, tonsillitis, and laryngitis and food poisoning Virus Virus is a toxin or poison. It is a microscopic organism consisting of genetic material.
1.1 Identify the differences between bacteria, viruses, fungi and parasites. Bacteria: A bacteria is a single celled organism, they are either a parasite or live independently. Bacteria have three basic shapes. Antibiotics can usually kill them; A few examples of bacteria could be meningitis, Ear infections, and conjunctivitis. Fungi :A Fungus is a spore producing organism and can live as a single celled yeast or as a larger multi-cellular mould.
Plants, animals, humans, fish, birds and reptiles can all be host to parasites. Head lice, thread and other worms are all parasites; they survive by feeding on the blood of their host. Some bacteria and viruses could be considered parasites. 1:2 Identify common illnesses and infections caused by bacteria, viruses, fungi and parasites Bacterial Infections: Salmonellas/ food poisoning, tuberculosis/TB, MRSA, coccidiosis, food poisoning, dysentery, bronchitis, ear infections, tonsillitis. Viral
1.3 What is meant by…. Infection~ A term used for an illness that has been caused by a harmful organism/bacteria. Colonisation~ This term is to identify when bad bacteria can be present but is causing no illness or harm to the carrier. 1.4 Systemic infection~ This is where an infection affects all the body and also the cognitive matter and can make the whole body feel unwell like chest/urine infections or septicemia. Localised infection~ Is where the pain can be pinpointed and is coming from the cause itself and the area that it homes at, this would be things like cuts/wounds to the skin or an ingrown toenail.
1.2 Identify common illnesses and infections caused by bacteria, viruses, fungi and parasites The most common illnesses and infections that occur due to bacteria, viruses, fungi and parasites are Dioreah, Vomiting, Influenza, Nail infections, Tick bites, Colds, Skin Conditions, Digestive Problems ( Parasites - Worms ) and in some cases, Death. 1.3 Describe what is meant by “Infection” and “Colonisation” As defined by : www.freedictionary.com INFECTION Invasion by and multiplication of pathogenic microorganisms in a bodily part or tissue, which may produce subsequent tissue injury and progress to overt disease through a variety of cellular or toxic mechanisms. This means that Infection is the process of infecting or being infected. COLONISATION A mass of microorganisms in a culture that originates from a single cell. This means that when either a Virus, Bacteria, Fungi or parasites in the single form, gather and join to make one mass of either Virus, Bacteria, Fungi or parasites.
It begins at the site of a break in the skin (a surgical or non-surgical wound). In order for someone to contract necrotizing fasciitis, the bacteria must be introduced into the body. Group A Strep is the same bacterium that causes strep throat This group of bacteria is responsible for mild cases of sore throat (pharyngitis), skin infections, as well as rare, severe illnesses such as toxic shock syndrome and necrotizing fasciitis. However, there are various strains of the bacteria, some of which are more powerful than others. With the right set of conditions, necrotizing fasciitis is a real risk and can cause severe damage.
A parasite is a tiny organism that lives in or on a host (A body) which they use in order to feed. Parasites can cause severe illness's, there are 3 main types of parasites: protozoa, helminths, and ectoparasites. 2. Bacteria salmonella(food poisioning) e.coli causes abdominal pain,cramps and diarreha Staphylococus found on skin Mrsa responsible for many infections. Viruses common cold,flu mumps and measles.
Parasites A parasite is a tiny organism that lives in or on a host (A body) which they use in order to feed. Parasites can cause severe illness's, there are 3 main types of parasites: protozoa, helminths, and ectoparasites. Protozoa- They are single celled organisms that can be free-living or parasitic in nature. They are able to multiply in humans, which contributes to their survival and also gives way to serious infections to develop. Helminths- are large, multicellular organisms that are generally visible
Disease Yersinia pestis The Plague Jesus Urquijo Biology 113 Lab March 18, 2013 Microbes are what make the world what it is today. They are found in nearly every environment on earth. Each species has its own way of getting nutrients and adapting to its environment, such as pH, aerobic and anaerobic conditions, and enzymes that are essential for optimum living. The majority of bacteria living on earth are harmless if not beneficial to the human race, but those few microbes that are harmful to humans are those that cause disease. They are referred to as pathogens and need to be observed so we can prevent the spreading of disease caused by those particular microbes.
This usually means that the bacteria have been able to invade either your circulatory system or the lymphatic system and spread. Localised infection - is restricted to a ceratin region of your body 1.5 not washing your hands, not wearing PPE, not storing or cooking foods properly, not cleaning your surroundings, not covering your nose or mouth when sneezing or coughing. 2.1 Food,Acidity,Temperature,Time,Oxygen,& Moisture 2.2 Inhalation, ingestion, injection and absorption 2.3 Common sources of infection include food, water, sick people (colds and flu or winter vomiting virus etc. ), animals and poor housing 2.4 Direct - Person to person (touching, biting ,intercourse)Indirect - coughing, sneezing etc. 2.5compromised immune system,lack of good safety precautions - handwashing, proper cleaning of all surfaces,exposure to more infectious agents (e.g in a hospital setting),handling of body fluids.