Across
- 3. surname of scientist who 'invented' vaccination
- 5. Vaccines contain dead or ................... forms of the disease-causing microorganism
- 6. disease cured through vaccination using cowpox
- 9. white blood cells that make antibodies
Down
- 1. the ability of an organism to resist an infection
- 2. a form of indirect protection that occurs when large numbers of the population have been immunised
- 4. proteins made by white blood cells that destroy pathogens
- 7. disease-causing microorganism
- 8. immunisation that helps prevent the spread of three infectious diseases