Deck 24: Rubella and Rubeola Infections

Question 1

Individuals requiring rubella immune status determination include pregnant women.

Answer 1

True

Question 2

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

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

Answer 2

first month.

Question 3

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

Answer 3

True

Question 4

Rubella infection may resemble all the following except:

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

Question 5

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

Question 6

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

Question 7

Rubella infection is transmitted by:

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

Question 8

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

Question 9

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.

Question 10

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

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

Question 11

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

Question 12

Individuals requiring rubella immune status determination include health care personnel.

Question 13

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

Question 14

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 15

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 16

Acquired rubella is also known as:

A) German measles.
B) 3-day measles.
C) infectious rubella.
D) both a and b

Question 17

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

Question 18

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

Question 19

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

Question 20

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 21

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 22

Antibodies to rubella virus remain present and protective indefinitely.

Question 23

Fill in the blanks.IgM antibodies against the rubella virus become detectable a few days after the onset of signs and symptoms and reach peak levels at (1)_______.These antibodies persist but rapidly diminish in concentration over the next (2)_______,until antibody is no longer clinically detectable.

A)7 to 10 days
B)10 to14 days
C)2 to 4 weeks
D)4 to 5 weeks

Question 24

Fill in the blanks.The incubation period of acquired rubella infection varies,but (1)___________ days is typical.Infected persons are usually contagious for 12 to 15 days,beginning (2)_______days before the appearance of a rash (if present).Acute rubella infection lasts from (3)_____days and generally requires minimal treatment.Permanent effects are extremely rare in those with an acquired infection.

A)3 to 5
B)5 to 7
C)12 to 14
D)12 to 15