Infectious Diseases

3. the branch of medicine which deals with the incidence, distribution, and possible control of diseases and other factors relating to health
5. viruses, bacteria, fungi, protozoa, and helminths (worms)
6. the molecules that assist the bacterium colonize the host at the cellular level
7. tailors its attack to a specific antigen previously encountered
11. a key player of the adaptive immune response that is responsible for humoral immunity in mammals
14. treatment to produce immunity to a particular infectious disease or pathogen
15. responds in the same way to all germs and foreign substances
17. direct contact, fomites, aerosol (airborne), oral (ingestion), and vectorborne
18. Art student with turtlenecks and glasses
19. a member of a large group of unicellular microorganisms
20. an infection transmitted by blood feeding arthropods

1. the number of individuals with the disease either at a specific point in time
2. an infective agent that typically consists of a nucleic acid molecule in a protein coat
4. an epidemic of an infectious disease that has spread across a large region
8. the number of new cases during a specified time period
9. a widespread occurrence of an infectious disease in a community at a particular time
10. Any person, animal, plant, soil or substance in which an infectious agent normally lives and multiplies
12. a diverse and important group of lymphocytes that mature and undergo a positive and negative selection processes in the thymus
13. a disease which can be transmitted to humans from animals.
16. the body's ability to stay safe by affording protection against harmful agents