Across
- 5. protective protein produced by the immune system
- 6. be given to protect against disease
- 8. not had a vaccination
- 9. is a secondary effect of a drug or medical treatment
- 10. a supplement dose of a vaccine
Down
- 1. a change in the form or structure of something
- 2. disease that emerged in china in 2019
- 3. a thing that is slightly different from or type of something else
- 4. a toxen or other foreign
- 7. a substance that is introduced in the body