Across
- 2. a covering used over the face to prevent the spread of infectious disease
- 3. the smallest structural and functional unit of the human body
- 5. an epidemic of an infectious disease that has spread over a large region
- 9. a complex network of cells and proteins that defend the body against infection
- 11. The only viral vector vaccine available for COVID-19
- 12. a substance used to trigger the production of antibodies
Down
- 1. treatment with a vaccine to produce immunity against a disease
- 4. molecules that carry the genetic information needed to synthesize proteins
- 6. a disease or period of sickness effecting the body or mind
- 7. a nonliving infectious agent that is only able to multiply within a host
- 8. the ability of an organism to prevent infection
- 10. an acute respiratory illness caused by a very infectious virus