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Pediatric Immunization Schedule | 마이메르시 MyMerci
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Pediatric Immunization Schedule

NCLEX Review Guide: Infectious Diseases & Pediatric Immunization Schedule

Infectious Disease Prevention

Standard Precautions

  • Hand hygiene is the most effective method to prevent healthcare-associated infections and must be performed before and after every patient contact.
  • Personal protective equipment (PPE) selection depends on the type of patient interaction and potential exposure to body fluids.

Key Points

  • Always use standard precautions with ALL patients regardless of diagnosis
  • Alcohol-based hand sanitizer is preferred unless hands are visibly soiled

Pediatric Immunization Schedule

Birth to 2 Months

  1. Hepatitis B vaccine - First dose given within 24 hours of birth, especially crucial for infants born to HBsAg-positive mothers
  2. Second Hepatitis B dose administered at 1-2 months of age

2 Months

  • DTaP (Diphtheria, Tetanus, Pertussis) - First dose protects against three serious bacterial infections
  • IPV (Inactivated Poliovirus) - Prevents poliomyelitis paralysis
  • Hib (Haemophilus influenzae type b) - Prevents meningitis and pneumonia
  • PCV13 (Pneumococcal conjugate) - Protects against pneumococcal disease
  • RV (Rotavirus) - Oral vaccine preventing severe diarrhea

12-15 Months

  • MMR (Measles, Mumps, Rubella) - Live vaccine requiring assessment of immunocompromised status before administration
  • Varicella (Chickenpox) - Live vaccine contraindicated in immunocompromised children
  • Hib fourth dose - Completes primary series
  • PCV13 fourth dose - Final dose in primary series

Clinical Scenario

A 15-month-old child arrives for well-child visit. Parent reports child had "cold symptoms" last week but is now asymptomatic. Mild illness without fever is NOT a contraindication to vaccination. Proceed with scheduled immunizations.

Vaccine Safety & Contraindications

Absolute Contraindications

  • Severe immunodeficiency - Live vaccines (MMR, Varicella, Rotavirus) are contraindicated in severely immunocompromised patients
  • Previous severe allergic reaction to vaccine component or previous dose requires permanent contraindication

Live vs. Inactivated Vaccines

Live VaccinesInactivated Vaccines
MMR, Varicella, RotavirusDTaP, IPV, Hib, PCV13, Hepatitis B
Contraindicated in immunocompromisedSafe in immunocompromised
Can cause mild disease symptomsCannot cause disease

Commonly Confused Points

Vaccine Timing Confusion

ConceptCorrect InformationCommon Mistake
Hepatitis B timingWithin 24 hours of birthWaiting until 2 months
MMR administration12-15 months (not before 12 months)Giving at 6 months
Live vaccine spacingGive simultaneously or ≥4 weeks apartGiving 2 weeks apart

Memory Aid: "LIVE" Vaccines

Live vaccines include: MMR, Varicella, Rotavirus
Remember: Live vaccines are Lethal to immunocompromised patients!

Study Tips

Age-Based Memory Aids

  • 2-4-6 Rule: DTaP, IPV, Hib, PCV13 given at 2, 4, 6 months
  • "Sweet 16": Many vaccines completed by 15-16 months
  • "Birth Day Special": Only Hepatitis B given at birth

Quick Check Questions

  • ☐ Can you name the three live vaccines given in childhood?
  • ☐ What vaccine is given within 24 hours of birth?
  • ☐ Which vaccines are contraindicated in immunocompromised children?
  • ☐ At what age is MMR first administered?

Common Pitfalls

  • Don't delay vaccines for minor illnesses without fever
  • Never give live vaccines to severely immunocompromised patients
  • Remember: Antibiotics don't affect vaccine efficacy
  • Simultaneous administration of vaccines is safe and recommended

Remember: You're protecting not just individual patients, but entire communities through vaccination. Your knowledge of immunization schedules helps prevent outbreaks and saves lives. Keep studying - you've got this! 💪

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