Across
- 4. spread of a disease by direct or indirect contact
- 5. any living thing
- 7. a virus/disease that was/is spread to all or most countries
- 8. passed from one person/place to another
Down
- 1. a substance made to provide immunity against a disease
- 2. The "a" in SARS
- 3. a person who was on the land first
- 6. 10 year time period