Adult immunization vaccine , dose, duration
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I now have comprehensive data from both the textbooks and the latest CDC/ACIP 2025 schedule. Here is a complete, organized reference:
Adult Immunization Schedule - Vaccine, Dose & Duration
Based on ACIP/CDC 2025 Recommended Adult Immunization Schedule (updated April 2026) and Goldman-Cecil Medicine / Textbook of Family Medicine.
Routine Vaccines for ALL Adults
| Vaccine | Dose | Schedule / Interval | Age Group |
|---|---|---|---|
| Influenza (IIV3 / RIV3) | 1 dose | Annually (every year) | 19+ years |
| Influenza (HD-IIV3, RIV3, aIIV3) | 1 dose | Annually - preferred for ≥65 | ≥65 years |
| Tdap / Td (Tetanus, Diphtheria, Pertussis) | 1 dose Tdap once, then Td booster | Tdap x1 (if not received), then Td every 10 years | All adults |
| COVID-19 | 1-2+ doses of updated vaccine | Annually (updated seasonal formulation); see notes | All adults |
Vaccines Based on Age
| Vaccine | Dose / Schedule | Age |
|---|---|---|
| HPV (Human Papillomavirus) | 2 doses if started at age 9-14 (0, 6-12 months); 3 doses (0, 1-2, 6 months) if started ≥15 yrs or immunocompromised | Up to 26 years routinely; shared decision-making 27-45 years |
| Zoster Recombinant (RZV / Shingrix) | 2 doses, 2-6 months apart | Routinely at ≥50 years; immunocompromised adults ≥19 years |
| Pneumococcal (PCV20 or PCV21) | 1 dose PCV20 or PCV21 alone OR PCV15 followed by PPSV23 ≥1 year later | ≥65 years (or younger with risk factors) |
| RSV Vaccine (Abrysvo / Arexvy / mResvia) | 1 dose (single dose only) | ≥60 years routinely; 50-59 years if at increased risk (updated June 2025) |
| MMR (Measles, Mumps, Rubella) | 1-2 doses | Adults born 1957 or later lacking evidence of immunity |
Catch-up / Risk-Based Vaccines
| Vaccine | Dose | Schedule | Indication |
|---|---|---|---|
| Hepatitis A (HepA) | 2 doses | 0 and 6-12 months (Havrix/Vaqta) OR 3-dose Twinrix at 0, 1, 6 months | Travel, liver disease, MSM, drug use |
| Hepatitis B (HepB) | 2 or 3 doses | Heplisav-B: 2 doses at 0, 1 month; Engerix/Recombivax: 3 doses at 0, 1, 6 months | All unvaccinated adults; diabetes (19-59 yrs) |
| Varicella (VAR) | 2 doses, 4-8 weeks apart | 0 and 4-8 weeks | Adults without evidence of immunity (born ≥1980) |
| Meningococcal MenACWY | 1 dose; booster every 5 years if ongoing risk | Single dose or series | Asplenia, complement deficiency, travel, college freshmen |
| Meningococcal B (MenB) | 2 doses (Bexsero: 0, 6 months; Trumenba: 0, 1-2, 6 months for high-risk) | Healthy 16-23 yrs: 2 doses per shared decision-making; high-risk: 3-dose series (0, 1-2, 6 months) | Asplenia, complement deficiency, outbreaks |
| Pneumococcal PPSV23 | 1 dose | At 65 (if PCV15 used first, ≥1 year later) or for high-risk younger adults | COPD, diabetes, asplenia, smokers, CKD |
| Mpox (JYNNEOS) | 2 doses SC, 4 weeks apart | 0 and 28 days | MSM, sex workers, lab workers |
| Meningococcal MenABCWY (Penmenvy) | Per schedule | Combined vaccine when both MenACWY + MenB indicated at same visit | ≥10 years at increased risk |
Special Population Notes
- Pregnancy: Tdap in every pregnancy (ideally 27-36 weeks); Influenza any trimester; RSV vaccine 32-36 weeks gestation (Abrysvo). Live vaccines (MMR, varicella, LAIV) are contraindicated.
- Immunocompromised (HIV with CD4 <200, high-dose steroids, chemotherapy): Avoid live vaccines (MMR, VAR, LAIV, Zoster live); use inactivated alternatives. RZV (Shingrix) is safe.
- Asplenia: PCV + PPSV23, MenACWY, MenB, Hib - all indicated.
- Healthcare workers: MMR x2 doses, Varicella x2 doses, Hepatitis B with serology check, annual influenza.
- Chronic liver disease: HepA, HepB.
Quick Reference Summary Table
| Vaccine | # of Doses | Key Interval |
|---|---|---|
| Influenza | 1 | Every year |
| COVID-19 | 1+ updated annually | Per season |
| Tdap | 1 Tdap then Td booster | Td every 10 years |
| HPV | 2 or 3 | 0, 6-12 months (2-dose); 0, 1-2, 6 months (3-dose) |
| Shingrix (RZV) | 2 | 2-6 months apart |
| Pneumococcal PCV20/PCV21 | 1 | Single dose (≥65 yrs) |
| RSV | 1 | Single lifetime dose |
| HepA | 2 | 6-12 months apart |
| HepB (Heplisav-B) | 2 | 1 month apart |
| HepB (Engerix/Recombivax) | 3 | 0, 1, 6 months |
| Varicella | 2 | 4-8 weeks apart |
| MMR | 1-2 | ≥28 days apart if 2 doses |
| MenACWY | 1 (+booster q5yr if ongoing risk) | Every 5 years if high risk |
| MenB (Bexsero) | 2 (healthy) / 3 (high risk) | 0, 6 months / 0, 1-2, 6 months |
| Mpox (JYNNEOS) | 2 | 28 days apart |
Sources:
- ACIP/CDC 2025 Adult Immunization Schedule (updated April 2026)
- Goldman-Cecil Medicine (9780323930345), Table E-15-3
- Textbook of Family Medicine 9e (9780323239905), p. 131
Note: The 2025 schedule updates include: trivalent influenza vaccines (replacing quadrivalent), PCV21 added as a new option, RSV now recommended for 50-59 year olds at increased risk (June 2025 update), and revised MenB scheduling with Bexsero.
Pneumococcal vaccine schedule
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pneumococcal vaccine schedule adults 2025 2026 PCV21 PCV20 PCV15 PPSV23 ACIP CDC
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pneumococcal vaccine schedule adults dose interval PCV15 PCV20 PCV21 PPSV23
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pneumococcal vaccine schedule adults dose prior vaccination history immunocompromised
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I now have everything needed for a comprehensive, current answer. Here it is:
Pneumococcal Vaccine Schedule (2025-2026 ACIP/CDC)
Available Vaccines at a Glance
| Vaccine | Brand Name | Serotypes Covered |
|---|---|---|
| PCV15 | Vaxneuvance | 15 serotypes |
| PCV20 | Prevnar 20 | 20 serotypes (includes serotype 4) |
| PCV21 | Capvaxive | 21 serotypes (broadest coverage; does NOT include serotype 4) |
| PPSV23 | Pneumovax 23 | 23 serotypes (polysaccharide, T-cell independent) |
Key 2025 update: Routine age-based recommendation expanded from ≥65 years to ≥50 years (effective October 2024). PCV21 added as a new option.
Adults ≥50 Years - Routine Schedule
If NEVER vaccinated (PCV-naive):
| Option | Vaccine | Interval |
|---|---|---|
| Option A (preferred) | PCV20 or PCV21 - 1 dose only | Series complete. No PPSV23 needed. |
| Option B | PCV15 - 1 dose, THEN PPSV23 - 1 dose | At least 1 year later (minimum 8 weeks if immunocompromised, cochlear implant, or CSF leak) |
If previously received PCV15 only:
- Give PPSV23 ≥1 year later (series then complete)
If previously received PPSV23 only:
- Give PCV20 or PCV21 ≥1 year after PPSV23
If previously received PCV13 only:
- Give PCV20 or PCV21 ≥1 year later (PPSV23 no longer recommended to complete a PCV13 series)
If previously received PCV13 + PPSV23:
- Adults 65+: Shared clinical decision-making - may receive PCV20 or PCV21 (optional, for additional serotype coverage)
- No routine additional vaccination required
If previously received PCV15 + PPSV23 or PCV20 or PCV21:
- Series complete. No further pneumococcal vaccines recommended.
Adults 19-49 Years - Risk-Based Only
Pneumococcal vaccination for this age group is NOT routine - it is indicated only for specific high-risk conditions:
| Risk Condition | Recommended Schedule |
|---|---|
| Immunocompromising conditions (HIV, leukemia, lymphoma, renal failure, nephrotic syndrome, immunosuppressive therapy, solid organ transplant, asplenia, sickle cell) | PCV20 or PCV21 x1 dose; OR PCV15 then PPSV23 ≥8 weeks later |
| Cochlear implant or CSF leak | Same as above (≥8 week interval acceptable) |
| Chronic heart disease, lung disease, liver disease, diabetes, alcoholism, smokers | Same series as above |
Serotype 4 Consideration
In communities where serotype 4 causes ≥30% of pneumococcal disease, choose:
- PCV20 alone, OR
- PCV15 + PPSV23
Because PCV21 does NOT cover serotype 4, it may offer suboptimal protection in those settings.
Summary Flow Diagram (Adults ≥50, Vaccine-naive)
No prior pneumococcal vaccine?
|
├── PCV20 or PCV21 → DONE (1 dose, series complete)
|
└── PCV15 → wait ≥1 year (or ≥8 weeks if immunocompromised) → PPSV23 → DONE
Special Populations
| Population | Key Point |
|---|---|
| Immunocompromised (DMARD users, HIV, transplant) | Minimum interval between PCV15 and PPSV23 reduced to 8 weeks; note that rituximab and methotrexate reduce vaccine immunogenicity |
| Asplenia / sickle cell | High priority; treat as immunocompromised |
| Chronic kidney disease / hemodialysis | High risk; follow risk-based schedule starting at age 19 |
| Rheumatologic disease on DMARDs | PCV20 preferred (single dose, maximal benefit); if PCV13 already received, add PCV20 for improved immunogenicity |
| Healthcare workers | No additional pneumococcal requirements beyond age/risk-based schedule |
| Pregnancy | Defer non-urgent pneumococcal vaccination until after delivery if possible |
How Many Doses Total?
| Scenario | Total Doses |
|---|---|
| PCV20 or PCV21 alone | 1 dose (series complete) |
| PCV15 + PPSV23 | 2 doses total |
| PPSV23 first, then PCV20/21 | 2 doses total |
| PCV13 + later PCV20/21 (catch-up) | 2 doses total |
No booster doses are currently recommended for any pneumococcal vaccine in adults (unlike meningococcal).
Sources:
- CDC Pneumococcal Vaccine Recommendations (updated 2025)
- CDC Vaccine Timing Job Aid for Adults (March 2025)
- ACIP MMWR 2025 Adult Immunization Schedule
- Firestein & Kelley's Textbook of Rheumatology - Pneumococcal Vaccination section
- Goldman-Cecil Medicine, Table E-15-3
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