Types of immunity
- Created by: Yzyl Quintana
- Created on: 10-02-17 19:28
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- Types of immunity
- Passive natural immunity
- Occurs when antibodies pass from a mother to a baby
- across the placenta before birth
- Breastmilk after birth
- Helps protect the baby for a short time
- Occurs when antibodies pass from a mother to a baby
- Active natural immunity
- Develops following an infection
- Specific immune response
- Produces a supply of antibodies and B & T memory cells that will respond quickly if the body is reinfected with the same pathogen
- Active artificial immunity
- Develops following immunisation
- Vaccines
- Usually contain attenuated forms of the virus/bacterium
- These stimulate the immune system to produce the antibodies but do not cause the disease
- Antigens in the vaccine trigger a 'SIR' by the body's B & T cells and antibodies are produced
- Usually contain attenuated forms of the virus/bacterium
- For some infections, dead pathogens/antigen fragments may be used to trigger the response
- Passive artificial immunity
- Develops when a person is given ready-made antibodies in a medical procedure
- Provides immediate protection in emergency situations
- But it is short lived. The protein antibodies are broken down after a few days/weeks
- Passive natural immunity
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