Across
- 4. A large group of unicellular microorganisms
- 9. A drug used to treat infections caused by bacteria
- 10. A preperation that is used to stimulate the body's immune system against diseases
- 12. A pandemic disease that took place starting in 2019
- 13. Proteins that protect you when an unwanted substance enters your body
- 14. An infectious agent that requires a host
Down
- 1. The spread of diseases
- 2. The organism that is harmed by a parasite taking nutrients
- 3. When A disease turns worldwide
- 5. A group of spores
- 6. A organism that lives in other organisms or species
- 7. a disorder of structure or function in a human, animal, or plant, especially one that has a distinctive group of symptoms, signs
- 8. A microscopic organism
- 11. When a disease is confined in one area