Answers SNHU
Q1. A school-age child develops bright erythema of both cheeks
several days after a mild fever and upper respiratory symptoms.
Which infection is most likely?
A) Rubella
B) Parvovirus B19 infection
C) Varicella
D) Roseola
Correct Answer: B) Parvovirus B19 infection
Rationale: Parvovirus B19 causes erythema infectiosum, or Fifth disease.
After a mild prodrome, children commonly develop the characteristic
“slapped-cheek” facial eruption followed by a more generalized lacy rash
over the trunk and extremities.
Q2. A caregiver asks when a child with uncomplicated Fifth disease
is most likely to transmit the virus to others. Which response is
most accurate?
A) Only while the lacy rash is present
B) Until every skin lesion completely disappears
C) For several weeks after the facial rash appears
D) Primarily during the early nonspecific illness before the characteristic rash
develops
Correct Answer: D) Primarily during the early nonspecific illness before the
characteristic rash develops
Rationale: Parvovirus B19 transmission is greatest during the early viremic
phase, when fever and respiratory symptoms may be present. By the time
the classic facial rash appears, otherwise healthy children are generally no
longer considered highly contagious.
Q3. Which child with suspected parvovirus B19 infection requires
particular attention for hematologic complications?
A) A child with sickle cell disease
, B) A child with mild seasonal allergies
C) A child with healed otitis media
D) A child with uncomplicated myopia
Correct Answer: A) A child with sickle cell disease
Rationale: Parvovirus B19 temporarily suppresses erythropoiesis. Children
with chronic hemolytic disorders depend on continuous red blood cell
production and therefore can develop severe transient aplastic anemia when
infected.
Q4. A pregnant household member reports close exposure to a child
newly diagnosed with Fifth disease. What is the best advice?
A) Exposure has no significance once pregnancy is established
B) Immediate MMR vaccination is indicated
C) The pregnant person should contact the obstetric healthcare provider for
individualized evaluation
D) The child requires antiviral treatment to protect the pregnancy
Correct Answer: C) The pregnant person should contact the obstetric
healthcare provider for individualized evaluation
Rationale: Maternal parvovirus B19 infection can occasionally affect the
fetus. Exposure does not mean infection occurred, but obstetric evaluation
may include assessment of maternal immunity or recent infection and
additional pregnancy monitoring when indicated.
Q5. A 10-month-old has three days of high fever but remains
relatively active between febrile episodes. The fever abruptly
resolves, followed by a pink macular rash beginning on the trunk.
Which diagnosis is most likely?
A) Measles
B) Roseola
C) Varicella
D) Fifth disease
Correct Answer: B) Roseola