Explain the difference between infectious dose (ID50) and lethal dose (LD50). Explain how these numbers can be used to determine overall virulence of a pathogen. 

__________ is how the microbe leaves a host’s body to spread disease. 

The inflammatory response occurs in response to ___________.

Define incidence. On February 17th, the number of new cases of COVID-19 reported in Indiana was 2,148.  The total population of Indiana is 6,745,350.  Calculate the incidence of COVID-19 in Indiana.  Show your work.

Which of the following is associated with the inflammatory response?

Define prevalence. As of February 13th, the total number of Chlamydia cases reported in Indiana was 4,311. The total population of Indiana is 6,745,350. Calculate the prevalence of Chlamydia in Indiana. Show your work.

Explain the difference between portal of entry and portal of exit.  Provide two examples. 

Define natural passive and artificial passive immunity. Explain the difference between the two. 

__________________ are exaggerated responses to otherwise harmless environmental antigens.

____________ were developed to determine the causative agent of a disease.