Explain the three elements necessary to spread infection.

Upon completion of the lab, write a brief essay (suggested length of 1–2 pages) in which you:

1.  Explain the three elements necessary to spread infection.

2.  Explain what can make a potential host susceptible to infection.

3.  Describe the three primary modes of pathogen transmission.

4.  Describe the eight sites you chose to test.

5.  Explain your results for each of the sites tested.

a.  Include a statement about the results you expected versus the results you observed.