Diagnostic tests that involve interaction between antigens and antibodies are known collectively

49.The autoimmune disease that affects the joints, kidney, skin and heart is termed:
a Lupus erythematosus          b. Rheumatoid arthritis              c. Hemolytic anemia              d. Graves Disease

 50. Diagnostic tests that involve interactions between antigens and antibodies are known collectively as:
 a. serology               b. complement fixing                c. precipitation          d.) agglutination

51. A dramatic increase in the incidence of a specific disease in a given population is referred to as a(n):

a) epidemic   b. pandemic             c. endemic disease                d. mortality

52. A disease that rapidly spreads to include most of the world population is called a(b)

a. endemic disease                 b. epidemic    c)pandemic        d. controllable disease

53. Sporadic cases (prevalence rate) of an infectious disease in a population over a long period is referred to as a(n):

 a. epidemic            b. contagion                C endemic disease                 d. pandemic

54. The study of the spread of a disease through a population is referred to as:

a epidemiology                  b. contagiology                   c. morbidity                            d. mortality

55. The possible sources of an infectious disease agent are referred to as its

a. fragmentation sequence              b. vector               c transmission route  d. resevoir