45. What is the number of new cases of a disease divided by the number of persons at risk for that disease? A. Propagated transmission
B. Prevalence rate
C. Incidence rate
D. Common source epidemic
E. Morbidity

46. Common cold is an example of Common source epidemic transmission
A. True
B. False

47. In the Epidemic Simulation Lab, the infection which was acquired by eating the same item can be best described as
A. Propagated transmission
B. Prevalence rate
C. Incidence rate
D. Common source epidemic
E. Morbidity

48. Which test is done to confirm a positive ELISA test?
A. Slide agglutination
B. Western Blot
C. Catalase
D. Enterotube

49. In order for the color change in ELISA test, which of the following must be present?
A. HIV virus must be isolated from a patient
B. Patient must have antibodies to HIV virus
C. Red Blood cell
D. Urea Decarboxylase
E. Pathogenic bacteria

50. What type of specimen is used to run ELISA test?
A. Throat swab
B. Saliva
C. Urine
D. Blood
E. Sputum