Across
- 1. a substance that is put into the blood and that protects the body from a disease
- 4. made to be thrown away after use
- 5. a chemical liquid that destroys bacteria
- 7. showing clear evidence that a particular substance or medical condition is present
- 9. a serious illness affecting one or both lungs that makes breathing difficult
- 10. a change in your body or mind that shows you are not healthy
Down
- 2. the spreading of a disease by people touching eachother
- 3. a period of time when an animals or a person has a disease is kept away from others
- 6. a thing that causes disease
- 8. liquid from the throat or lungs, especially when it is coughed up because of disease