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.
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.
Contact with contaminated objects
Person to person
Animals that spread disease
Food and water
Chemical warfare on germs (sweat and oils produce acids that kill bacterial)
The immune system
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
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.
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