This is a fully editable Microsoft PowerPoint presentation designed for the new OCR A Level Biology A Specification for first teaching in 2015. It covers content under unit 4.1 Disease and the Immune System, ‘Vaccines and Vaccination’ (Module 4 Biodiversity, Evolution and Disease). Including: What is a vaccine? How does a vaccine work? Vaccine Efficiency Herd and Ring Vaccination Successful Vaccination Programmes Vaccination Problems Smallpox and how it was controlled Future Threats Although this resource has been designed for the OCR A specification much of its content is relevant for other A Level Biology specifications. PLEASE ALSO CHECK OUT MY OTHER A LEVEL BIOLOGY RESOURCES!