Communicable Diseases

5. white blood cells in the lymphatic system. Makes B and T cells.
8. a person who appears healthy but is infected with HIV and can pass it to others.
11. proteins that attach to antigens, keeping them from causing harm.
12. disease that can be passed from person to person, animal or object.
15. virus that causes AIDS.
16. body's response to injury or disease.
17. condition that occurs when pathogens enter the body multiply and cause harm.
18. deadly disease that interferes with the body's natural ability to fight infection.
19. any substance released by pathogens.
20. infections that are spread from person to person through sexual contact.

1. an infection that rarely occurs in a healthy person.
2. any condition that interferes with the proper functioning of body or mind.
3. tiny one celled organism (pink eye, strep)
4. a combination of of body defenses made up of cells, tissues and organs that fight off pathogens and disease.
6. more complex organism that cannot make its own food (ringworm)
7. smallest pathogen (cold and flu)
9. preparation of dead or weakened pathogens that causes the body to produce antibodies.
10. body's ability to to resist the germs that cause disease.
13. one-celled organism more complex than bacteria (malaria)
14. disease causing organisms.