Infectious Diseases

2. a substance usually prepared from killed or weakened pathogens that is introduced to the body to produce immunity
6. made up of antibodies and certain types of blood cells;helps fight diseases
9. reaction to injury or infection that is characterized by pain, redness, or swelling
10. changes that you notice in your mind or body that are caused by a disease or disorder
11. organisms that absorb and use the nutrients of living or dead organisms
14. one of the most common infections caused by a parasite within the United States
15. this is considered nonliving since it cannot reproduce outside of a living host
16. any disease that is caused by an agent that has invaded the body
17. bacterial infection of the digestive system, spread by eating contaminated foods

1. bacteria, viruses, and fungi are examples of this
3. sweat, tears, and stomach acids are examples of this used to destroy pathogens
4. you can help prevent this by not taking antibiotics for viral infections
5. extra doses of a vaccine that help the body maintain the production of memory cells for a particular disease
7. caused by a bacteria usually found in the soil
8. there are over 300 different kinds of these living in your mouth, not all of them cause disease
12. the varicella virus is the pathogen that causes this type of infection
13. malaria is caused by this type of agent