Vaccination Schedules and Principles Practice Questions
18 free Vaccination Schedules and Principles 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 type of immunity is produced when a person receives a vaccine?
- A Passive natural immunity
- B Active acquired immunity
- C Passive artificial immunity
- D Innate immunity
Correct answer: Active acquired immunity
Vaccines stimulate the body to produce its own immune response, resulting in active acquired immunity. This includes the formation of memory cells for long-term protection.
Which vaccine type contains weakened but live organisms?
- A Inactivated vaccine
- B Live attenuated vaccine
- C Protein subunit vaccine
- D Toxoid vaccine
Correct answer: Live attenuated vaccine
Live attenuated vaccines contain weakened forms of the pathogen. They produce a strong and long-lasting immune response.
Which vaccine is contraindicated in immunocompromised patients?
- A Inactivated vaccine
- B Protein subunit vaccine
- C Live attenuated vaccine
- D Toxoid vaccine
Correct answer: Live attenuated vaccine
Live attenuated vaccines can cause infection in immunocompromised individuals. Their immune systems may not be able to control even weakened organisms.
At what age is the first dose of the hepatitis B vaccine typically administered?
- A At birth
- B 6 months
- C 1 year
- D 5 years
Correct answer: At birth
The first dose of the hepatitis B vaccine is given at birth. This provides early protection against infection.
Which vaccine is commonly given at 12–15 months of age?
- A Hepatitis B
- B MMR vaccine
- C Influenza
- D Tetanus
Correct answer: MMR vaccine
The MMR vaccine is typically administered at 12–15 months. It protects against measles, mumps, and rubella.
What is the purpose of booster doses in vaccination schedules?
- A Initiate the immune response
- B Enhance and prolong immunity
- C Replace primary dose
- D Reduce side effects
Correct answer: Enhance and prolong immunity
Booster doses reinforce immunity by stimulating memory cells. They help maintain long-term protection.
Which route is commonly used for administering most childhood vaccines?
- A Oral
- B Intramuscular
- C Subcutaneous only
- D Intravenous
Correct answer: Intramuscular
Most childhood vaccines are given intramuscularly. This route ensures proper absorption and immune response.
Which vaccine is given annually due to frequent viral mutations?
- A Polio
- B Influenza
- C Hepatitis A
- D Varicella
Correct answer: Influenza
Influenza viruses mutate frequently, requiring yearly vaccination. This ensures protection against current strains.
Which principle explains herd immunity?
- A Vaccination protects only the vaccinated individual
- B Vaccines eliminate all pathogens
- C Only children need vaccination
- D High vaccination rates protect the community
Correct answer: High vaccination rates protect the community
Herd immunity occurs when a large portion of the population is vaccinated. This reduces disease spread and protects vulnerable individuals.
Which vaccine is given orally?
- A MMR
- B Hepatitis B
- C Tetanus
- D Polio
Correct answer: Polio
The oral polio vaccine is administered by mouth. It provides immunity in the gastrointestinal tract.
Which adverse reaction is common after vaccination?
- A Severe organ failure
- B Permanent nerve paralysis
- C Severe bleeding
- D Mild fever and soreness
Correct answer: Mild fever and soreness
Mild fever and soreness at the injection site are common side effects. These indicate the immune system is responding.
What should a nurse do before administering a vaccine?
- A Review only the vaccine expiration date
- B Administer without reviewing consent forms
- C Document the injection site only
- D Check for allergies and contraindications
Correct answer: Check for allergies and contraindications
Checking for allergies and contraindications ensures patient safety. Some vaccines may not be suitable for certain individuals.
Which vaccine is recommended during pregnancy?
- A Live attenuated vaccine
- B MMR vaccine
- C Influenza vaccine
- D Varicella vaccine
Correct answer: Influenza vaccine
Inactivated influenza vaccine is safe during pregnancy. It protects both mother and newborn.
What is the minimum interval between two doses of the same vaccine important for?
- A Prevent excessive vaccine dosing
- B Reduce cost
- C Avoid documentation
- D Ensure effective immune response
Correct answer: Ensure effective immune response
Proper intervals allow the immune system to respond effectively. Too short intervals may reduce vaccine effectiveness.
Which vaccine protects against cervical cancer?
- A Hepatitis B
- B Influenza vaccine
- C MMR vaccine
- D HPV vaccine
Correct answer: HPV vaccine
The HPV vaccine protects against human papillomavirus strains linked to cervical cancer. It is recommended for adolescents.
Which storage condition is essential for most vaccines?
- A Room temperature only
- B Direct sunlight exposure
- C Cold chain maintenance
- D Freezing all vaccines
Correct answer: Cold chain maintenance
Vaccines must be stored within recommended temperature ranges. Cold chain maintenance preserves their effectiveness.
Which vaccine is given to prevent tetanus after injury?
- A MMR
- B Polio
- C Tetanus toxoid
- D Hepatitis A vaccine
Correct answer: Tetanus toxoid
Tetanus toxoid is administered after certain injuries to prevent infection. It boosts immunity against Clostridium tetani.
What is the role of adjuvants in vaccines?
- A Directly kill invading bacteria
- B Reduce vaccine cost
- C Enhance immune response
- D Prevent side effects
Correct answer: Enhance immune response
Adjuvants are substances added to vaccines to boost the immune response. They improve vaccine efficacy.