Across
- 2. existing in almost all of an area
- 5. can send 100,000 germs into the air
- 7. the action of expelling air from the lungs
- 9. kept away from other people or animals
- 10. the appearance of the first signs of disease
- 12. a substance containing a virus or bacterium
Down
- 1. people are not allowed to enter or leave a building
- 3. the process of passing something
- 4. when your body temperature is high
- 6. very small organisms that causes disease
- 8. a time when something suddenly begins
- 11. an infection in one or both lungs