Across
- 2. a form of direct disease transmission through contact with other people
- 3. acquired naturally or vaccine-induced immunity
- 5. the number of people in a population who currently have the disease
- 7. refers to immunity that occurs in response to exposure to a particular antigen
- 10. short-term immunity which results from the introduction of antibodies from the outside
- 11. cannot survive without a host are extremely small and mostly cause disease.
- 14. skin, saliva, blood, mucous, bodily secretions
- 15. charged with fighting off bacteria, viruses, and cancers
- 19. are infections spread between people and animals
- 20. an infection passed from one person to another during a sexual act
Down
- 1. when a bacteria, virus, or parasite enters and grows in or on your body
- 4. the action of structures and substances that are naturally present
- 6. the study of outbreaks of diseases, the causes, locations, and how various communities are affected, utilizing relative information to aid in the prevention of future outbreaks.
- 8. estimated number of newly infected during a specific time
- 9. attack and kill infected cells in the body, secretes anti-bodies
- 12. measure of frequency
- 13. are used to treat or prevent some types of bacterial infection
- 16. an STD that starts with the letter C
- 17. are single-celled organisms that can survive on their own.
- 18. a form of indirect disease transmission through food