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Infectious Diseases - A disease caused by an agent that can pass from one living thing to another
Communicable disease – an infectious disease that is passed from one person to another.
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What causes Inf.Dis.
Bacteria - a type of microorganism that can cause disease.
Strep throat, food poisoning, urinary tract infections.
Viruses – a type of agent that can cause disease.
Cold, flu, cold sores, measles, mono.
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Air
Contact with contaminated objects
Person to person
Animals that spread disease
Food and water
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Skin
Chemical warfare on germs (sweat and oils produce acids that kill bacterial)
Mucus membranes
Stomach acids
Helpful microorganisms
Inflammations
The immune system
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T-cells – cells that regulate the action of the immune system
Antibodies – substances that stick to the surface of pathogens slowing their action.
B-cells – cells in the immune system that produce antibodies against infection
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Immunization – injection of a small amount of a pathogen that will provide protection against an infectious disease.
Antibiotics – drugs that kill or limit the growth of bacteria.
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H – Human: virus can only infect humans
I – Immuno-deficiency: the effect of the virus is to create a deficiency, a failure to work properly with the body’s immune system.
V – Virus: one of its characteristics is that it is incapable reproducing by itself. It reproduces by taking over the machinery of the human cell
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Bodily Fluids
Blood
Semen
Vaginal secretions
Breast milk
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Sexual intercourse
Oral sex
Anal sex
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