Infectious Diseases

3. a pathogen's or microorganism's ability to cause damage to a host.
7. living organisms that can transmit infectious pathogens between humans, or from animals to humans.
9. the study and analysis of the distribution, patterns and determinants of health and disease conditions in a defined population.
10. the body's ability to stay safe by affording protection against harmful agents.
13. tailors its attack to a specific antigen previously encountered.
16. Freckles
17. They help your immune system fight germs and protect you from disease.
19. a substance used to stimulate immunity to a particular infectious disease or pathogen.

1. the proportion of a particular population found to be affected by a medical condition at a specific time.
2. single-celled organisms multiplying or releasing toxins in your body.
4. transmission is the passing of a pathogen causing communicable disease.
5. a disease which can be transmitted to humans from animals.
6. the microorganism that causes the disease.
8. the defense system with which you were born.
11. the population of organisms or the specific environment in which an infectious pathogen naturally lives and reproduces.
12. measure of the probability of occurrence of a given medical condition in a population within a specified period of time.
14. a widespread occurrence of an infectious disease over a whole country or the world at a particular time.
15. responsible for humoral immunity in mammals.
18. a widespread occurrence of an infectious disease in a community at a particular time.
19. illnesses you get from tiny organisms that use your cells to make more copies of themselves