Types of Immunity

11.3

Types of Immunity

There are two types of immunity; active immunity and passive immunity.
Immunization is the process of receiving immunity artificially that can protect the individual from certain diseases.
Immunization can be done through serum, antiserum, and vaccines.

Active immunity

This immunity stays for a long period.
There are two types; natural active immunity and artificial active immunity.

Natural active immunity

This immunity is obtained when the individual recovers from the disease after the first exposure to the pathogen.
Memory cells are able to remember the infection from the first exposure.
If the same pathogen infects the body for the second time, the immune system will respond rapidly.
The number of antibodies will increase and be produced rapidly to stop the infection.

Artificial active immunity

Immunity is acquired by injecting antigens into the body to stimulate lymphocytes to produce antibodies against the antigen.
This type of immunity is known as vaccination.

Passive immunity

Provide protection on certain diseases for a short period.
Antibodies are obtained from the external source and these antibodies will be excreted after a period of time.
There are two types of passive immunity; natural passive immunity and artificial passive immunity.

Natural passive immunity

Obtained by the baby that receives the antibodies through placenta and breastmilk.
Provide full protection to the baby until the immune system of the baby can take over the task.

Artificial passive immunity

Obtained through serum injection that contains certain antibodies to destroy the antigens.
This type of immunity provides immediate protection for short period.

11.3

Types of Immunity

There are two types of immunity; active immunity and passive immunity.
Immunization is the process of receiving immunity artificially that can protect the individual from certain diseases.
Immunization can be done through serum, antiserum, and vaccines.

Active immunity

This immunity stays for a long period.
There are two types; natural active immunity and artificial active immunity.

Natural active immunity

This immunity is obtained when the individual recovers from the disease after the first exposure to the pathogen.
Memory cells are able to remember the infection from the first exposure.
If the same pathogen infects the body for the second time, the immune system will respond rapidly.
The number of antibodies will increase and be produced rapidly to stop the infection.

Artificial active immunity

Immunity is acquired by injecting antigens into the body to stimulate lymphocytes to produce antibodies against the antigen.
This type of immunity is known as vaccination.

Passive immunity

Provide protection on certain diseases for a short period.
Antibodies are obtained from the external source and these antibodies will be excreted after a period of time.
There are two types of passive immunity; natural passive immunity and artificial passive immunity.

Natural passive immunity

Obtained by the baby that receives the antibodies through placenta and breastmilk.
Provide full protection to the baby until the immune system of the baby can take over the task.

Artificial passive immunity

Obtained through serum injection that contains certain antibodies to destroy the antigens.
This type of immunity provides immediate protection for short period.