Across
- 3. Immunodeficiency
- 5. Caused by deer ticks
- 6. Bacterial infections
- 9. Reaction to tissue damage
- 10. Neurodegenerative
- 11. Physical barrier
- 12. Viral infection
- 14. Infections of the lungs
- 17. Caused by birds
- 18. Another airborne disease
Down
- 1. Microorganism in dirty water
- 2. Diseases of the lungs
- 4. Fights off pathogens
- 7. Caused by bacteria
- 8. caused by mosquitos
- 13. Becoming prominent
- 15. Chemical barrier
- 16. Caused by pigs