Most adults over 50 remember their flu shot. Far fewer know they may be due for a second shingles dose, that pneumonia vaccine now starts at 50 instead of 65, or that RSV vaccine is a one-time shot for everyone 75 and older. The rules changed several times in the last few years, so gaps are common, even among people who see a doctor regularly.
This list ranks the vaccines adults over 50 most often miss, and why each one is easy to overlook. It follows the CDC adult immunization schedule set with the Advisory Committee on Immunization Practices (ACIP). For the full schedule with every age group, see our adult vaccine schedule guide. Your own plan depends on your health, past shots and medicines, so treat this as a checklist to bring to your next visit.
The vaccines most often missed after 50
Shingles vaccine (recombinant zoster, Shingrix)
Best for: Every adult 50 and older
Shingles can cause a painful rash and nerve pain that lingers for months after the rash is gone. The vaccine is a 2-dose series, and the second dose is the one people forget. If you had one dose years ago, you do not need to restart; you just need to finish. Adults 19 and older with a weakened immune system are also eligible.
- CDC: 2 doses, 2-6 months apart, from age 50
- Recommended even if you already had shingles or had the older Zostavax vaccine
- Adults 19+ with weakened immunity also qualify
Pneumococcal (pneumonia) vaccine
Best for: Every adult 50 and older
In October 2024 the starting age dropped from 65 to 50, so many people in their 50s and early 60s have not been offered it yet. For most adults who have never had one, it is a single dose of PCV20 or PCV21. If PCV15 is used, a dose of PPSV23 follows at least a year later.
- CDC: recommended for all adults 50 and older
- Usually 1 dose of PCV20 or PCV21
- Bring any old vaccine records: past doses change what you need
RSV vaccine
Best for: Everyone 75+, and adults 50-74 at increased risk
RSV is a common respiratory virus that can put older adults in the hospital. The vaccine is newer, so it is often missed. It is a single dose: you do not repeat it every year, and if you already had one, you do not need another. Adults 50-74 qualify if they have a condition that raises their risk, such as chronic heart or lung disease, diabetes, end-stage kidney disease, severe obesity, a weakened immune system, or living in a nursing home.
- CDC: 1 dose for all adults 75 and older
- 1 dose for adults 50-74 at increased risk of severe RSV
- One-time only: additional doses are not recommended
Tdap or Td booster
Best for: Every adult, every 10 years
Tdap protects against tetanus, diphtheria and whooping cough. Ten years goes by fast, and many adults cannot remember their last one. If you have never had the Tdap version as an adult, you should get it once; after that, either Td or Tdap every 10 years. Whooping cough protection matters if you spend time with a new grandbaby.
- CDC: 1 dose of Tdap, then Td or Tdap every 10 years
- Tdap is also given during each pregnancy
Hepatitis B vaccine
Best for: Adults 50-59 who were never vaccinated, and at-risk adults 60+
Many adults grew up before hepatitis B became a routine childhood shot and never had it. The CDC now recommends it for all adults through age 59. Adults 60 and older should get it if they have risk factors, such as chronic liver disease or HIV, and may get it if they simply want the protection.
- CDC: routine for adults 19-59
- Age 60+: recommended with risk factors, optional without
- A 2-, 3- or 4-dose series depending on the brand
Annual flu vaccine (high-dose or adjuvanted at 65+)
Best for: Everyone, every year
Flu shots are the best known vaccine on this list, but people still skip a year, especially after a mild season. The flu virus changes, so last year's shot does not carry over. Adults 65 and older are advised to get one of the stronger versions made for older immune systems.
- CDC: 1 dose every year for adults
- Age 65+: high-dose, recombinant or adjuvanted flu vaccine is preferred
COVID-19 vaccine
Best for: A decision to make with your doctor
Since October 2025, the CDC schedule lists COVID-19 vaccination as shared clinical decision-making. That means you and your clinician decide together based on your age, health and risk, rather than a blanket rule. The CDC notes the benefit is highest for adults 65 and older and for younger adults with conditions that raise their risk of severe illness.
- CDC (Oct 2025): individual-based, shared clinical decision-making
- Benefit is greatest at 65+ and for adults at increased risk
Why these vaccines slip through the cracks
- The rules changed. Pneumococcal moved to 50, RSV was added, and COVID-19 guidance shifted. Advice you got five years ago may be out of date.
- Multi-dose series. Shingles and hepatitis B need more than one visit, and the follow-up dose is easy to forget.
- Records are scattered. If you moved to Central Florida from another state, your shots may be spread across old doctors and pharmacies. Bring whatever records you can find, including pharmacy printouts.
- No one asked. Vaccines tend to come up at a check-up, and adults who skip check-ups miss the reminder.
A good time to catch up is your yearly check-up or, if you have Medicare, your Medicare Annual Wellness Visit. Our immunizations page explains how we track your shots. If you have also been away from care for a while, our list of screenings to catch up on is a good companion, and our list of the best primary care for seniors in Davenport may help if you are choosing a doctor.
Side effects and when to get help
A sore arm, tiredness or a low fever for a day or two is common, especially after the shingles vaccine. Serious reactions are rare. If you have trouble breathing, swelling of the face or throat, or a fast heartbeat and dizziness after any vaccine, call 911.
Catch up on your vaccines in Davenport
Elon Health Primary Care is a family medicine practice at 43378 US Highway 27, Suite B, Davenport, near US-27 and I-4. Dr. Sandeep Pandya and our team can review your records and tell you which vaccines you still need. We are accepting new patients by appointment, Monday to Friday, 8am to 5pm. Call 352-508-5254 or request an appointment.
Sources
- CDC: Adult Immunization Schedule by Age
- CDC: Adult Immunization Schedule Notes
- CDC: Adult Immunization Schedule Addendum
- CDC: Shingles Vaccine Considerations for Clinicians
- CDC Newsroom: Pneumococcal Vaccination Age Lowered from 65 to 50 (Oct 2024)
- CDC Newsroom: Immunization Schedule Adopts Individual-Based Decision-Making for COVID-19 (Oct 2025)