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AQA - A/AS Level A level Biology (Specification B)
Specification Ref.
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15.17 | Infectious disease | Artificial immunity by vaccination. The limitations of vaccination related to variability of antigens in pathogens. The herd immunity effect. Candidates should be able to: interpret information relating to the incidence and mortality of diseases; evaluate the effectiveness of immunisation programmes and changes in social conditions in preventing epidemics. | 3 |
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