What is the Immune System?
The Immune System attacks and destroys invaders like pathogens and antigens that enter the body.
Infectious diseases are caused by germs called pathogens.
Two Lines of Immune Defense:
First line is the skin and the linings of the bodies internal systems.
Second line of defence has two parts Innate and Acquired.
Direct Contact
Shaking hands, sharing drinks, sharing bodily fluids with an infected person
Indirect Contact
Being near someone that is sick and that could be contagious
Water and Food
Eating foods, such as egg and meat that are infected by Salmonella bacteria
Animal Bite
Being bitten by an animal carrying the rabies virus
4 Ways of Transmission
1. Direct Contact
2. Indirect Contact
3. Water and Food
4. Animal Bites
An innate response is quick and general. An acquired response is slower and specific.