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→What do we vaccinate with?
*Short duration of action
*Short duration of action
[[Image:Active Immunisation.jpg|thumb|right|150px|Active Immunisation - Copyright nabrown RVC]]
'''Active immunisation'''
'''Active immunisation'''
*Administer antigen so the patient's own antibodies protect against disease
*Administer antigen so the patient's own antibodies protect against disease
**Living organisms
**Living organisms