Childhood Infections and Immunizations Practice Questions
20 free Childhood Infections and Immunizations practice questions for the NCLEX Exam. Tap an option to answer — you get instant feedback, the correct answer, and a detailed explanation for every question.
Which disease is most consistent with a 4-year-old child presenting with fever, cough, coryza, and a maculopapular rash starting at the hairline and spreading downward?
- A Mumps
- B Measles (rubeola)
- C Varicella (chickenpox)
- D Rubella (German measles)
Correct answer: Measles (rubeola)
Measles typically presents with fever, cough, coryza, and a maculopapular rash starting at the hairline and spreading downward.
Which vaccine is routinely given to infants starting at 2 months of age for protection against diphtheria, tetanus, and pertussis?
- A MMR
- B DTaP
- C Varicella
- D IPV (inactivated poliovirus)
Correct answer: DTaP
The DTaP vaccine protects against diphtheria, tetanus, and pertussis, beginning at 2 months of age.
Which infection is most common and often leads to antibiotic prescriptions in children according to outpatient pediatric guidelines?
- A Viral gastroenteritis
- B Acute otitis media
- C Scarlet fever
- D Whooping cough
Correct answer: Acute otitis media
Acute otitis media is one of the most common childhood infections leading to antibiotic prescriptions.
At what minimum age is influenza vaccination recommended for children according to guidelines?
- A 2 weeks
- B 6 months
- C 18 months
- D 4 years
Correct answer: 6 months
Influenza vaccination is recommended for children aged 6 months and older.
Which infection is most likely in a 10-month-old presenting with high fever, irritability, and a bulging anterior fontanelle?
- A Otitis media
- B Meningitis
- C Hand-foot-mouth disease
- D Viral upper respiratory infection
Correct answer: Meningitis
A bulging anterior fontanelle in an infant suggests increased intracranial pressure, raising concern for meningitis.
What is a correct rationale for ensuring children receive vaccines on schedule?
- A Vaccines can be delayed indefinitely without any consequence
- B Immune protection is optimal at specific ages; delay raises risk
- C A single dose of each vaccine gives lifelong protection in all children
- D Vaccines are only necessary when the child travels overseas
Correct answer: Immune protection is optimal at specific ages; delay raises risk
The immunisation schedule is designed so the child’s immune system develops optimal protection at specific ages; delaying increases vulnerability.
Regarding the varicella vaccine, which statement is true?
- A It is administered as a single dose only at birth
- B First dose at 12-15 months, second around 4-6 years
- C It is unnecessary for a child who already had chickenpox
- D It is recommended for adolescents rather than young children
Correct answer: First dose at 12-15 months, second around 4-6 years
The varicella vaccine schedule includes the first dose at 12-15 months and a second dose at 4-6 years for improved protection.
Which infection is strongly suspected in a child under 2 years with persistent fever, cough, difficulty breathing, and nasal flaring in winter?
- A Acute bacterial tonsillitis
- B RSV bronchiolitis
- C Fifth disease (parvovirus)
- D Pertussis (whooping cough)
Correct answer: RSV bronchiolitis
Respiratory syncytial virus (RSV) commonly causes bronchiolitis in infants and young children during the winter season.
What is a key preventive measure against vaccine-preventable diseases in children?
- A Delaying all non-urgent vaccines until the child starts school
- B Administering vaccines only when overseas travel is planned
- C Keeping up with the routine childhood immunisation schedule
- D Relying solely on antibiotics to treat infections instead of vaccines
Correct answer: Keeping up with the routine childhood immunisation schedule
Timely administration of routine childhood vaccines is essential to prevent serious infections in children.
Which vaccine is added annually for children due to frequent virus strain changes?
- A The inactivated polio (IPV) vaccine
- B The hepatitis B (HepB) vaccine
- C The influenza (flu) vaccine
- D The MMR (measles-mumps-rubella) vaccine
Correct answer: The influenza (flu) vaccine
The influenza virus mutates frequently, necessitating annual vaccination for children each flu season.
A 3-year-old child with high fever and a 'slapped-cheek' rash likely has which infection?
- A Measles (rubeola)
- B Rubella (German measles)
- C Parvovirus B19 (erythema infectiosum)
- D Varicella (chickenpox)
Correct answer: Parvovirus B19 (erythema infectiosum)
Parvovirus B19 causes a 'slapped-cheek' rash in young children with a mild febrile illness.
Which statement about vaccinations in children with mild illness is correct?
- A Vaccination should always be postponed until the child is fully healthy
- B Children with mild illness can still receive vaccines on schedule
- C Vaccines significantly worsen the course of any mild illness
- D Antibiotics must be given before any vaccine if the child has a cold
Correct answer: Children with mild illness can still receive vaccines on schedule
Mild illness is not a contraindication to vaccination; vaccines may proceed even with a cold or low-grade fever.
Which disease does the pneumococcal conjugate vaccine protect children against?
- A Seasonal influenza infection
- B Pneumonia, meningitis and sepsis from S. pneumoniae
- C Rotavirus-related infantile gastroenteritis
- D Measles (rubeola) viral infection
Correct answer: Pneumonia, meningitis and sepsis from S. pneumoniae
The pneumococcal conjugate vaccine shields children from diseases like pneumonia, meningitis, and sepsis caused by Streptococcus pneumoniae.
Child with swelling behind the jaw, pain, fever, and difficulty swallowing likely has which childhood infection?
- A Chickenpox
- B Mumps (parotitis)
- C Whooping cough
- D Hand-foot-mouth disease
Correct answer: Mumps (parotitis)
Mumps presents with parotid gland swelling, fever, and painful swallowing, especially in unvaccinated children.
Which immunization is indicated at birth in many countries?
- A MMR (measles-mumps-rubella)
- B Rotavirus (oral) vaccine
- C Hepatitis B vaccine
- D Varicella (chickenpox)
Correct answer: Hepatitis B vaccine
The hepatitis B vaccine is typically administered at birth in many immunization schedules to prevent vertical transmission.
What approach aligns with immunization best practice for a 12-month-old child with no prior immunizations?
- A Vaccinate only at age 2 when the child starts school
- B Begin catch-up immunisation now per age-appropriate schedule
- C Skip vaccines entirely since the child is past the usual age
- D Wait until the child turns 5 and give all vaccines at once
Correct answer: Begin catch-up immunisation now per age-appropriate schedule
Catch-up immunization should be initiated immediately according to the age-appropriate schedule for protection against vaccine-preventable diseases.
Which complication is most likely in unvaccinated children with varicella (chickenpox)?
- A A mild self-limiting rash with no further problems
- B Secondary bacterial skin infection or pneumonia
- C Transient mild fever that resolves within a day
- D A short-lived rash followed by lifelong immunity
Correct answer: Secondary bacterial skin infection or pneumonia
Chickenpox in unvaccinated children can lead to severe complications such as secondary bacterial skin infection, pneumonia, or encephalitis, which are more common than in vaccinated children.
A 5-year-old child with a 'whoop' sound after coughing spells likely has which infection?
- A Pertussis (whooping cough)
- B Adenovirus respiratory infection
- C Rubella (German measles)
- D Influenza (seasonal flu)
Correct answer: Pertussis (whooping cough)
Pertussis presents with an inspiratory 'whoop' following paroxysmal cough, especially in children preventable by DTaP vaccine.
Which statement about herd immunity in childhood immunizations is accurate?
- A Only vaccinated children are protected; the unvaccinated face equal risk
- B High coverage indirectly protects the unvaccinated by reducing spread
- C Herd immunity is irrelevant for vaccine-preventable diseases in children
- D Herd immunity requires 100% vaccine uptake before it has any effect
Correct answer: High coverage indirectly protects the unvaccinated by reducing spread
Herd immunity can protect the unvaccinated by reducing disease spread when immunization coverage is sufficient.
Which action is not recommended when administering childhood immunizations?
- A Verify the child’s vaccine record and age-appropriate schedule
- B Explain common side-effects and what to do if they occur
- C Delay vaccination indefinitely because the child has a mild cold
- D Monitor the child for immediate adverse reactions post-vaccination
Correct answer: Delay vaccination indefinitely because the child has a mild cold
Delaying vaccination for a mild illness like a cold is unnecessary; vaccines can proceed according to guidelines.