Non-Infectious - You cannot catch them. (Diabetes, Sickle cell)
Infectious - You can catch them. (Flu, Nora virus, Malaria, HIV)
There are 4 types of pathogens (microorganisms that cause disease):
Our defence against infectious disease:
Pathogens cause harm by direct cell damage and/or releasing toxins.
Our immune system fights back against these.
White blood cells are monitoring your body for signs of a microorganism.
If they do come across one, there are three stages of attack:
- Consuming them. The white blood cells engulf and digest pathogens
- Producing Antitoxins. Counters the effects of toxins produced
- Producing Antibodies. This involves creating proteins that will remember the antigen on the…