Across
- 3. Large marsupial
- 4. Likes to chase mice
- 6. : Describes a very dangerous or harmful virus.
- 7. Flying mammal
- 8. : The body's ability to resist a disease.
- 10. : To give a vaccine or medicine by injection.
- 11. Has a trunk
- 15. : A weakened virus used to make a live vaccine.
Down
- 1. : A dead virus used in certain vaccines.
- 2. Man's best friend
- 5. : An extra dose of vaccine to strengthen protection.
- 9. : When a virus changes its genetic form.
- 12. : A white blood cell that fights infection.
- 13. : A microorganism that causes disease.
- 14. : To give someone a vaccine to create immunity.