21. Principles of Disease

Which of the following organisms is regularly transmitted sexually?  __________        

a. Trichomonas

b. Entamoeba

c. Trypanosoma

d. Enterobius

Virulent pathogens are:

List the causative agent and method of transmission of infectious mononucleosis.

Of the following characteristics, which would contribute most to making a microorganism an effective biological warfare agent?

a. Is readily available in the environment

b. Can be spread by contact after original dissemination

c. Cannot be treated well outside a hospital

d. Is easily identified by symptoms

State what type of mortality rate is applicable.

Scenario 1: Out of 6,000 live births last week, 10 of the women died.

Type of mortality rate?

Scenario 2: 300 patients had disease X last year, 10 of whom died.

Type of mortality rate?

Scenario 3: Of the 120,000 live births in a particular community last year, 15 of the babies died before their first birthday.

Type of mortality rate?

Scenario 4: Out of 3,000 people in a given population, 100 died of pneumonia.

Type of mortality rate?

Calculated mortality rate (expressed per 100 in the population):

Which of the following types of epidemiologists is most like a detective?

a. Descriptive epidemiologist

b. Analytical epidemiologist

c. Experimental epidemiologist

d. Reservoir epidemiologist

Human herpesvirus 2 _____.

a. can cause genital herpes

b. may infect a baby at birth

c. causes about 10% of cold sores

d. all of the above

Of the parasitic helminths discussed in this chapter, the only one transmitted by mosquitoes is _____________ .

____________ may be transmitted to humans from cat litter boxes.