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→What do we vaccinate with?
'''Advantages'''
'''Advantages'''
*Long duration of action
*Long duration of action as once antibody is produced against the antigen, memory cells are formed which continue circulating in the body
**For further information on memory cells click [[B cell differentiation - WikiBlood|here]]
'''Disadvantages'''
'''Disadvantages'''
*Delay in protection
*Delay in protection as the host's immune system needs to evoke an immune response against the antigen
**For further information on the antibody response click [[Adaptive Immune System - WikiBlood|here]]
*Often needs two or more doses
*Often needs two or more doses as the first dose initiates the '''priming''' reaction where antibody production ceases after a few weeks, but the second and subsequent doses creates memory cells which remain in the circulation for a much longer period of time
**For further information on the T cell independent and dependent responses click [[B cell differentiation - WikiBlood#T-Cell Dependent and Independent Responses|here]]
==What antigen(s) do we use in the vaccine?==
==What antigen(s) do we use in the vaccine?==