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Vaccination in Special Populations

Vaccination in Special Populations

Vaccination in Special Populations

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Pregnant & Lactating Women - Bundle of Joy Shots

📌 C/I Live Vaccines: "My Vain Boy Loves Icecream On Yachts" (MMR, Varicella, BCG, LAIV, OPV, Yellow Fever).

StatusVaccinesKey Points
ContraindicatedMMR, Varicella, BCG, Live Influenza (LAIV), OPV (Sabin), Yellow FeverLive vaccines: Risk to fetus
RecommendedTdap, Inactivated Influenza (IIV)Tdap: 27-36 wks each pregnancy; IIV: any trimester, protects mother & newborn
Special CircumstancesHepatitis B, RabiesHigh-risk exposure; Post-exposure prophylaxis (PEP) for Rabies

⭐ Tdap vaccine is recommended during each pregnancy (27-36 weeks), irrespective of prior vaccination.

Immunocompromised Hosts - Guarding the Vulnerable

  • General Principle: ⚠️ AVOID LIVE VACCINES. Prefer killed, subunit, toxoid, recombinant vaccines.
  • HIV Infection:
    • CD4 count guides.
    • MMR, Varicella if CD4 > 200 cells/µL (no AIDS illness).
    • Avoid: BCG, OPV, Yellow Fever, live typhoid.
  • Post-Transplant (Solid Organ/HSCT):
    • Inactivated: 3-6 months post-transplant.
    • Live: Delayed (≥24 months post-HSCT, off immunosuppression, no GVHD).
  • Asplenia:
    • Risk: Encapsulated bacteria.
    • 📌 SHiN vaccines: S. pneumoniae, H. influenzae b, N. meningitidis.
    • ⭐ > Patients with asplenia should receive pneumococcal, meningococcal, and Hib vaccines, preferably 2 weeks before elective splenectomy or as soon as possible after.
  • Chronic Steroids/DMARDs:
    • High-dose steroids (Prednisone ≥20mg/d14d)/DMARDs: AVOID LIVE VACCINES.
    • Vaccinate pre-therapy if possible.

Extremes of Age & Others - Cradle to Cane Care

  • Preterm Infants (<37 wks):

    • Chronological age; full doses.
    • BCG: Defer <2kg (or <2.5kg).
    • Hep B (<2kg BW):
      • Mom HBsAg (+): Vaccine+HBIG at birth (1st dose).
      • Mom HBsAg (-): 1st dose @ 1mo/discharge/>2kg.
      • Mom HBsAg (?): Vaccine at birth (+HBIG). Test mom.

    ⭐ Preterms: full doses by chronological age. BCG deferred <2kg-2.5kg. Hep B (<2kg): if mom HBsAg (+), vaccine+HBIG at birth; if (-), 1st dose >2kg/1mo.

  • Elderly (≥65 years):

    • Influenza: Annual.
    • Pneumococcal: PCV13 then PPSV23 (1 yr apart; 8 wks if IC).
    • Zoster: Recombinant preferred.
  • Chronic Diseases (Key Vaccines):

    • Diabetes: Influenza, Pneumococcal, Hep B (19-59y; consider ≥60y).
    • CKD: High-dose Hep B, Pneumococcal, Influenza.
    • CLD: Hep A, Hep B, Pneumococcal, Influenza.

High‑Yield Points - ⚡ Biggest Takeaways

  • Pregnant women: Avoid live vaccines (MMR, Varicella). Give Tdap at 27-36 weeks.
  • Immunocompromised: Avoid live vaccines. CD4 count critical in HIV (MMR if CD4 >200).
  • Asplenia: Vaccinate against Pneumococcal, Meningococcal, Hib. Give pre-splenectomy or ASAP post-op.
  • Premature infants: Use chronological age, not corrected; full doses.
  • HIV-infected children: Avoid BCG if symptomatic. MMR/Varicella if CD4% ≥15%.
  • High-dose steroids (>20mg/day >14 days): Live vaccines: wait 1 month post-therapy.

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