Deck 23: Rubella and Rubeola Infections

Question 1

Methods for detecting rubella include all the following except

A)hemagglutination inhibition.
B)an enzyme immunoassay (EIA).
C)a fluorescent immunoassay (FIA).
D)viral culture.

Answer 1

viral culture.

Question 2

Immunity to rubella results from

A)contracting a rubella infection.
B)vaccination against rubella.
C)exposure to other childhood infectious diseases.
D)Both A and B.

Answer 2

Both A and B.

Question 3

In a patient with a rubeola infection, the appearance of __________ is associated with seroconversion after vaccination.

A)IgM
B)IgG
C)IgM and IgG
D)IgG and IgA

Answer 3

IgG

Question 4

IgG rubella antibody in a concentration of 1:8 or greater indicates

A)past infection with rubella virus.
B)clinical protection against future rubella infection.
C)acute infection with rubella virus.
D)Both A and B.

Question 5

About which percentage of infants infected in utero with rubella fail to survive beyond 18 months?

A)Less than 10%
B)10% to 20%
C)20% to 30%
D)More than 30%

Question 6

Individuals requiring rubella immune status determination include pregnant women.

Question 7

Acquired rubella is also known as

A)German measles.
B)3-day measles.
C)infectious rubella.
D)Both A and B.

Question 8

Rubella infection may resemble all the following except:

A)infectious mononucleosis.
B)drug-induced rashes.
C)chickenpox.
D)scarlet fever.

Question 9

No rubella infection outbreaks have occurred in the United States in the recent past.

Question 10

On American college and university campuses, the susceptibility to rubella infection among students is estimated to be as high as 50%.

Question 11

The diagnosis of congenital rubella infection can be determined by measuring

A)IgM levels in the neonate.
B)IgG levels in the neonate.
C)IgG levels in the mother.
D)both IgM and IgG levels in the mother.

Question 12

Individuals requiring rubella immune status determination include all females and no males.

Question 13

If paired specimen testing reveals that the titer of rubella antibody is the same, the results indicate that the

A)patient was previously immunized.
B)acute specimen was taken after the titer of antibody was at a maximum concentration.
C)convalescent specimen was taken too early.
D)Both A and B.

Question 14

In a patient with a rubeola infection, the appearance of __________ is associated with acute infection.

A)IgM
B)IgG
C)IgM and IgG
D)IgG and IgA

Question 15

The risk of fetal anomalies in maternal rubella is highest in the

A)first month.
B)second month.
C)third month.
D)second trimester.

Question 16

Individuals requiring rubella immune status determination include preschool-age and school-age children.

Question 17

In countries with active rubella vaccination programs, individuals who have not been vaccinated have a higher level of susceptibility to rubella infection.

Question 18

Rubella infection is transmitted by

A)blood transfusions.
B)respiratory secretions.
C)fecal contamination.
D)contaminated food.

Question 19

In a patient with primary rubella infection, the appearance of __________ is associated with the manifestation of clinical signs and symptoms, when present.

A)IgM
B)IgG
C)IgM and IgG
D)IgG and IgA

Question 20

In countries in which vaccination is uncommon, the incidence of rubella infection is high and epidemics are frequent.

Question 21

The presence of IgM antibody to rubella virus in a single specimen suggests that the patient has recently experienced a rubella infection.

Question 22

Antibodies to rubella virus remain present and protective indefinitely.

Question 23

Individuals requiring rubella immune status determination include health care personnel.

Question 24

Production of IgG antibody to rubella virus is not associated with the appearance of clinical signs and symptoms.