Across
- 2. the virus breaks into this
- 4. the flu was a ________.
- 6. these are signs of a sickness or disease.
- 8. close ________________led to a rapid spread of the flu.
- 10. the flu
Down
- 1. an illness that makes your lungs fill with fluid
- 3. the people who survived had a strong ________ system.
- 5. something that you are unaware of
- 7. a sudden and quick spread of a disease.
- 9. a change in form