OUTCOME 1 UNDERSTAND THE CAUSES OF INFECTION
Bacteria are one celled micro-organisms that get their nutrients fro their environment to live eg: The human body. Bacteria causes infections and can reproduce either inside or outside the body.
Viruses are pieces of nucleic acid (DNA or RNA) wrapped in a thin coat of protein. Viruses need to be inside living cells to grow and reproduce. They do not survive long unless they are inside a living thing eg: person, plant or animal. This is called a host.
Fungi are multi celled plant like organisms. They can not make their own food, instead getting their nutrition from plants, people and animals.
Parasites may be protozoa, yeasts or multi cellular organisms like fungi or worms, that live inside or on their host to obtain nourishment without providing any benefit to their host.
Bacterial infections - sore throats (tonsillitis, strep throat), ear infections, pneumonia
Viral infections - Chickenpox, Measles, Flu, HIV
Fungal infections - Athletes foot, Thrush
Parasitical infections - Scabies, Malaria, Legionnaires Disease, Dysentery, Ring Worm
Infection begins when an organism successfully ‘colonises’ by entering the body, growing and multiplying.
Localised infection is an infection that is in a specific part or region of the body, while Systemic infection in one that affects the whole body, usually travelling by blood or lymph.
Inadequate hand washing, not wearing PPE, not following proper food preparation guidelines, lack of risk assessments, and staff not following procedures and incorrect disposal of waste are all poor practises that may lead to the spread of infection.
OUTCOME 2 UNDERSTAND THE TRANSMITION OF INFECTION
Most micro-organisms require food, warmth, moisture, oxygen and time in orger to grow and multiply.
An infective agent my enter the body by inhalation, ingestion or sexual transmition. The infective