Causes and spread of infection

Topics: Bacteria, Immune system, Microbiology Pages: 4 (1400 words) Published: December 17, 2014
Causes and spread of infection.

Bacteria. These organisms are made up of just one cell. They have the power to divide so can multiply on their own. Some bacteria are harmless and can be of use in the aid of digestion and are found in the intestines. Other bacteria can be the cause of diseases. These bacteria have to find a way in to the body to be of harm and can make their way through the skin or be digested and attack our immune system. Viruses. These micro-organisms are very tiny. They invade living normal cells and use these cells to multiply and produce other viruses like themselves. Eventually this kills off the normal cell and can make you ill. Parasites. These are micro-organisms that live off other organisms or a host so they are able to survive. Some parasites don’t affect the host. But others grow, reproduce, or can even give off toxins that make the host sick resulting in a parasitic infection. They include; protozoan, fungi, and multi-cellular organisms. Fungi. These are single celled organisms a little bigger than bacteria. They do not make their own food so they get their food from absorbing the nutrients from their surroundings. Common illnesses and infections causes.


Acute Rheumatic Fever Anthrax, Bacterial Vaginosis, Botulism, Brucellosis,

Cholera. Diptheria. Gastroenteritis. Legionnaires Disease . Listeriosis.

Meningitis Salmonella. E.Col. Staphylococcus Aureus Infection. Tetanus.

Toxic Shock Syndrome.. Tuberculosis Typhoid . Whooping Cough (Pertussis)

Measles Mumps Rubella Influenza Polio Hepatitis A+B Herpes 1+2 HIV Noro Virus

Sleeping sickness Thread, Hook and Tape worms
Scabies Malaria Head Lice Elephantiasis
Aspergillosis, Blastomycosis, Candidacies, Warts, Athletes Foot, Thrush Ring Worm Tinia Capitis.

Infection is when the the body is invaded with micro-organisms that...
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