Across
- 5. can be spread
- 6. doctors who do the surgery
- 8. the absence of bacteria, viruses, and other microorganisms.
- 10. letting the blood go from the body
Down
- 1. A virus that can kill you
- 2. a person qualified to practice medicine.
- 3. a widespread of an infectious disease
- 4. treatment to produce immunity against a disease
- 7. based on or characterized by the principles of science.
- 9. an outbreak of a pandemic disease.